20115480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1$

素因数の和:350

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 56711400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 49, 55, 56, 60, 66, 70, 77, 84, 88, 98, 105, 110, 120, 132, 140, 147, 154, 165, 168, 196, 210, 220, 231, 245, 264, 280, 294, 308, 311, 330, 385, 392, 420, 440, 462, 490, 539, 588, 616, 622, 660, 735, 770, 840, 924, 933, 980, 1078, 1155, 1176, 1244, 1320, 1470, 1540, 1555, 1617, 1848, 1866, 1960, 2156, 2177, 2310, 2488, 2695, 2940, 3080, 3110, 3234, 3421, 3732, 4312, 4354, 4620, 4665, 5390, 5880, 6220, 6468, 6531, 6842, 7464, 8085, 8708, 9240, 9330, 10263, 10780, 10885, 12440, 12936, 13062, 13684, 15239, 16170, 17105, 17416, 18660, 20526, 21560, 21770, 23947, 26124, 27368, 30478, 32340, 32655, 34210, 37320, 41052, 43540, 45717, 47894, 51315, 52248, 60956, 64680, 65310, 68420, 71841, 76195, 82104, 87080, 91434, 95788, 102630, 119735, 121912, 130620, 136840, 143682, 152390, 167629, 182868, 191576, 205260, 228585, 239470, 261240, 287364, 304780, 335258, 359205, 365736, 410520, 457170, 478940, 502887, 574728, 609560, 670516, 718410, 838145, 914340, 957880, 1005774, 1341032, 1436820, 1676290, 1828680, 2011548, 2514435, 2873640, 3352580, 4023096, 5028870, 6705160, 10057740, 20115480]

約数ペア:

[(1, 20115480), (2, 10057740), (3, 6705160), (4, 5028870), (5, 4023096), (6, 3352580), (7, 2873640), (8, 2514435), (10, 2011548), (11, 1828680), (12, 1676290), (14, 1436820), (15, 1341032), (20, 1005774), (21, 957880), (22, 914340), (24, 838145), (28, 718410), (30, 670516), (33, 609560), (35, 574728), (40, 502887), (42, 478940), (44, 457170), (49, 410520), (55, 365736), (56, 359205), (60, 335258), (66, 304780), (70, 287364), (77, 261240), (84, 239470), (88, 228585), (98, 205260), (105, 191576), (110, 182868), (120, 167629), (132, 152390), (140, 143682), (147, 136840), (154, 130620), (165, 121912), (168, 119735), (196, 102630), (210, 95788), (220, 91434), (231, 87080), (245, 82104), (264, 76195), (280, 71841), (294, 68420), (308, 65310), (311, 64680), (330, 60956), (385, 52248), (392, 51315), (420, 47894), (440, 45717), (462, 43540), (490, 41052), (539, 37320), (588, 34210), (616, 32655), (622, 32340), (660, 30478), (735, 27368), (770, 26124), (840, 23947), (924, 21770), (933, 21560), (980, 20526), (1078, 18660), (1155, 17416), (1176, 17105), (1244, 16170), (1320, 15239), (1470, 13684), (1540, 13062), (1555, 12936), (1617, 12440), (1848, 10885), (1866, 10780), (1960, 10263), (2156, 9330), (2177, 9240), (2310, 8708), (2488, 8085), (2695, 7464), (2940, 6842), (3080, 6531), (3110, 6468), (3234, 6220), (3421, 5880), (3732, 5390), (4312, 4665), (4354, 4620)]