19986120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1$

素因数の和:145

約数の個数: 288

約数和(自身を含む): 83229120

約数和(自身を除く): 63243000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 49, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 98, 99, 103, 105, 110, 120, 126, 132, 140, 147, 154, 165, 168, 180, 196, 198, 206, 210, 220, 231, 245, 252, 264, 280, 294, 308, 309, 315, 330, 360, 385, 392, 396, 412, 420, 440, 441, 462, 490, 495, 504, 515, 539, 588, 616, 618, 630, 660, 693, 721, 735, 770, 792, 824, 840, 882, 924, 927, 980, 990, 1030, 1078, 1133, 1155, 1176, 1236, 1260, 1320, 1386, 1442, 1470, 1540, 1545, 1617, 1764, 1848, 1854, 1960, 1980, 2060, 2156, 2163, 2205, 2266, 2310, 2472, 2520, 2695, 2772, 2884, 2940, 3080, 3090, 3234, 3399, 3465, 3528, 3605, 3708, 3960, 4120, 4312, 4326, 4410, 4532, 4620, 4635, 4851, 5047, 5390, 5544, 5665, 5768, 5880, 6180, 6468, 6489, 6798, 6930, 7210, 7416, 7931, 8085, 8652, 8820, 9064, 9240, 9270, 9702, 10094, 10197, 10780, 10815, 11330, 12360, 12936, 12978, 13596, 13860, 14420, 15141, 15862, 16170, 16995, 17304, 17640, 18540, 19404, 20188, 20394, 21560, 21630, 22660, 23793, 24255, 25235, 25956, 27192, 27720, 28840, 30282, 31724, 32340, 32445, 33990, 37080, 38808, 39655, 40376, 40788, 43260, 45320, 45423, 47586, 48510, 50470, 50985, 51912, 55517, 60564, 63448, 64680, 64890, 67980, 71379, 75705, 79310, 81576, 86520, 90846, 95172, 97020, 100940, 101970, 111034, 118965, 121128, 129780, 135960, 142758, 151410, 158620, 166551, 181692, 190344, 194040, 201880, 203940, 222068, 227115, 237930, 259560, 277585, 285516, 302820, 317240, 333102, 356895, 363384, 407880, 444136, 454230, 475860, 499653, 555170, 571032, 605640, 666204, 713790, 832755, 908460, 951720, 999306, 1110340, 1332408, 1427580, 1665510, 1816920, 1998612, 2220680, 2498265, 2855160, 3331020, 3997224, 4996530, 6662040, 9993060, 19986120]

約数ペア:

[(1, 19986120), (2, 9993060), (3, 6662040), (4, 4996530), (5, 3997224), (6, 3331020), (7, 2855160), (8, 2498265), (9, 2220680), (10, 1998612), (11, 1816920), (12, 1665510), (14, 1427580), (15, 1332408), (18, 1110340), (20, 999306), (21, 951720), (22, 908460), (24, 832755), (28, 713790), (30, 666204), (33, 605640), (35, 571032), (36, 555170), (40, 499653), (42, 475860), (44, 454230), (45, 444136), (49, 407880), (55, 363384), (56, 356895), (60, 333102), (63, 317240), (66, 302820), (70, 285516), (72, 277585), (77, 259560), (84, 237930), (88, 227115), (90, 222068), (98, 203940), (99, 201880), (103, 194040), (105, 190344), (110, 181692), (120, 166551), (126, 158620), (132, 151410), (140, 142758), (147, 135960), (154, 129780), (165, 121128), (168, 118965), (180, 111034), (196, 101970), (198, 100940), (206, 97020), (210, 95172), (220, 90846), (231, 86520), (245, 81576), (252, 79310), (264, 75705), (280, 71379), (294, 67980), (308, 64890), (309, 64680), (315, 63448), (330, 60564), (360, 55517), (385, 51912), (392, 50985), (396, 50470), (412, 48510), (420, 47586), (440, 45423), (441, 45320), (462, 43260), (490, 40788), (495, 40376), (504, 39655), (515, 38808), (539, 37080), (588, 33990), (616, 32445), (618, 32340), (630, 31724), (660, 30282), (693, 28840), (721, 27720), (735, 27192), (770, 25956), (792, 25235), (824, 24255), (840, 23793), (882, 22660), (924, 21630), (927, 21560), (980, 20394), (990, 20188), (1030, 19404), (1078, 18540), (1133, 17640), (1155, 17304), (1176, 16995), (1236, 16170), (1260, 15862), (1320, 15141), (1386, 14420), (1442, 13860), (1470, 13596), (1540, 12978), (1545, 12936), (1617, 12360), (1764, 11330), (1848, 10815), (1854, 10780), (1960, 10197), (1980, 10094), (2060, 9702), (2156, 9270), (2163, 9240), (2205, 9064), (2266, 8820), (2310, 8652), (2472, 8085), (2520, 7931), (2695, 7416), (2772, 7210), (2884, 6930), (2940, 6798), (3080, 6489), (3090, 6468), (3234, 6180), (3399, 5880), (3465, 5768), (3528, 5665), (3605, 5544), (3708, 5390), (3960, 5047), (4120, 4851), (4312, 4635), (4326, 4620), (4410, 4532)]