20197800

素因数分解:

$2^3\times 3^2\times 5^2\times 7^2\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 216

約数和(自身を含む): 79249950

約数和(自身を除く): 59052150

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 49, 50, 56, 60, 63, 70, 72, 75, 84, 90, 98, 100, 105, 120, 126, 140, 147, 150, 168, 175, 180, 196, 200, 210, 225, 229, 245, 252, 280, 294, 300, 315, 350, 360, 392, 420, 441, 450, 458, 490, 504, 525, 588, 600, 630, 687, 700, 735, 840, 882, 900, 916, 980, 1050, 1145, 1176, 1225, 1260, 1374, 1400, 1470, 1575, 1603, 1764, 1800, 1832, 1960, 2061, 2100, 2205, 2290, 2450, 2520, 2748, 2940, 3150, 3206, 3435, 3528, 3675, 4122, 4200, 4410, 4580, 4809, 4900, 5496, 5725, 5880, 6300, 6412, 6870, 7350, 8015, 8244, 8820, 9160, 9618, 9800, 10305, 11025, 11221, 11450, 12600, 12824, 13740, 14427, 14700, 16030, 16488, 17175, 17640, 19236, 20610, 22050, 22442, 22900, 24045, 27480, 28854, 29400, 32060, 33663, 34350, 38472, 40075, 41220, 44100, 44884, 45800, 48090, 51525, 56105, 57708, 64120, 67326, 68700, 72135, 80150, 82440, 88200, 89768, 96180, 100989, 103050, 112210, 115416, 120225, 134652, 137400, 144270, 160300, 168315, 192360, 201978, 206100, 224420, 240450, 269304, 280525, 288540, 320600, 336630, 360675, 403956, 412200, 448840, 480900, 504945, 561050, 577080, 673260, 721350, 807912, 841575, 961800, 1009890, 1122100, 1346520, 1442700, 1683150, 2019780, 2244200, 2524725, 2885400, 3366300, 4039560, 5049450, 6732600, 10098900, 20197800]

約数ペア:

[(1, 20197800), (2, 10098900), (3, 6732600), (4, 5049450), (5, 4039560), (6, 3366300), (7, 2885400), (8, 2524725), (9, 2244200), (10, 2019780), (12, 1683150), (14, 1442700), (15, 1346520), (18, 1122100), (20, 1009890), (21, 961800), (24, 841575), (25, 807912), (28, 721350), (30, 673260), (35, 577080), (36, 561050), (40, 504945), (42, 480900), (45, 448840), (49, 412200), (50, 403956), (56, 360675), (60, 336630), (63, 320600), (70, 288540), (72, 280525), (75, 269304), (84, 240450), (90, 224420), (98, 206100), (100, 201978), (105, 192360), (120, 168315), (126, 160300), (140, 144270), (147, 137400), (150, 134652), (168, 120225), (175, 115416), (180, 112210), (196, 103050), (200, 100989), (210, 96180), (225, 89768), (229, 88200), (245, 82440), (252, 80150), (280, 72135), (294, 68700), (300, 67326), (315, 64120), (350, 57708), (360, 56105), (392, 51525), (420, 48090), (441, 45800), (450, 44884), (458, 44100), (490, 41220), (504, 40075), (525, 38472), (588, 34350), (600, 33663), (630, 32060), (687, 29400), (700, 28854), (735, 27480), (840, 24045), (882, 22900), (900, 22442), (916, 22050), (980, 20610), (1050, 19236), (1145, 17640), (1176, 17175), (1225, 16488), (1260, 16030), (1374, 14700), (1400, 14427), (1470, 13740), (1575, 12824), (1603, 12600), (1764, 11450), (1800, 11221), (1832, 11025), (1960, 10305), (2061, 9800), (2100, 9618), (2205, 9160), (2290, 8820), (2450, 8244), (2520, 8015), (2748, 7350), (2940, 6870), (3150, 6412), (3206, 6300), (3435, 5880), (3528, 5725), (3675, 5496), (4122, 4900), (4200, 4809), (4410, 4580)]