19869740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2441}}^1$

素因数の和:2498

約数の個数: 48

約数和(自身を含む): 46769184

約数和(自身を除く): 26899444

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2441, 4070, 4882, 8140, 9764, 12205, 24410, 26851, 48820, 53702, 90317, 107404, 134255, 180634, 268510, 361268, 451585, 537020, 903170, 993487, 1806340, 1986974, 3973948, 4967435, 9934870, 19869740]

約数ペア:

[(1, 19869740), (2, 9934870), (4, 4967435), (5, 3973948), (10, 1986974), (11, 1806340), (20, 993487), (22, 903170), (37, 537020), (44, 451585), (55, 361268), (74, 268510), (110, 180634), (148, 134255), (185, 107404), (220, 90317), (370, 53702), (407, 48820), (740, 26851), (814, 24410), (1628, 12205), (2035, 9764), (2441, 8140), (4070, 4882)]