19765240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1549}}^1$

素因数の和:1600

約数の個数: 64

約数和(自身を含む): 50220000

約数和(自身を除く): 30454760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1549, 1595, 2552, 3098, 3190, 6196, 6380, 7745, 12392, 12760, 15490, 17039, 30980, 34078, 44921, 61960, 68156, 85195, 89842, 136312, 170390, 179684, 224605, 340780, 359368, 449210, 494131, 681560, 898420, 988262, 1796840, 1976524, 2470655, 3953048, 4941310, 9882620, 19765240]

約数ペア:

[(1, 19765240), (2, 9882620), (4, 4941310), (5, 3953048), (8, 2470655), (10, 1976524), (11, 1796840), (20, 988262), (22, 898420), (29, 681560), (40, 494131), (44, 449210), (55, 359368), (58, 340780), (88, 224605), (110, 179684), (116, 170390), (145, 136312), (220, 89842), (232, 85195), (290, 68156), (319, 61960), (440, 44921), (580, 34078), (638, 30980), (1160, 17039), (1276, 15490), (1549, 12760), (1595, 12392), (2552, 7745), (3098, 6380), (3190, 6196)]