20781108

素因数分解:

$2^2\times 3^2\times {\mathrm{79}}^1\times {\mathrm{7307}}^1$

素因数の和:7396

約数の個数: 36

約数和(自身を含む): 53202240

約数和(自身を除く): 32421132

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 237, 316, 474, 711, 948, 1422, 2844, 7307, 14614, 21921, 29228, 43842, 65763, 87684, 131526, 263052, 577253, 1154506, 1731759, 2309012, 3463518, 5195277, 6927036, 10390554, 20781108]

約数ペア:

[(1, 20781108), (2, 10390554), (3, 6927036), (4, 5195277), (6, 3463518), (9, 2309012), (12, 1731759), (18, 1154506), (36, 577253), (79, 263052), (158, 131526), (237, 87684), (316, 65763), (474, 43842), (711, 29228), (948, 21921), (1422, 14614), (2844, 7307)]