64554020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{8941}}^1$

素因数の和:8988

約数の個数: 36

約数和(自身を含む): 143089884

約数和(自身を除く): 78535864

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 8941, 17882, 35764, 44705, 89410, 169879, 178820, 339758, 679516, 849395, 1698790, 3227701, 3397580, 6455402, 12910804, 16138505, 32277010, 64554020]

約数ペア:

[(1, 64554020), (2, 32277010), (4, 16138505), (5, 12910804), (10, 6455402), (19, 3397580), (20, 3227701), (38, 1698790), (76, 849395), (95, 679516), (190, 339758), (361, 178820), (380, 169879), (722, 89410), (1444, 44705), (1805, 35764), (3610, 17882), (7220, 8941)]