18404780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 40007520

約数和(自身を除く): 21602740

約数列:

[1, 2, 4, 5, 10, 20, 53, 97, 106, 179, 194, 212, 265, 358, 388, 485, 530, 716, 895, 970, 1060, 1790, 1940, 3580, 5141, 9487, 10282, 17363, 18974, 20564, 25705, 34726, 37948, 47435, 51410, 69452, 86815, 94870, 102820, 173630, 189740, 347260, 920239, 1840478, 3680956, 4601195, 9202390, 18404780]

約数ペア:

[(1, 18404780), (2, 9202390), (4, 4601195), (5, 3680956), (10, 1840478), (20, 920239), (53, 347260), (97, 189740), (106, 173630), (179, 102820), (194, 94870), (212, 86815), (265, 69452), (358, 51410), (388, 47435), (485, 37948), (530, 34726), (716, 25705), (895, 20564), (970, 18974), (1060, 17363), (1790, 10282), (1940, 9487), (3580, 5141)]