20123030

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{467}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 17616490

約数列:

[1, 2, 5, 10, 31, 62, 139, 155, 278, 310, 467, 695, 934, 1390, 2335, 4309, 4670, 8618, 14477, 21545, 28954, 43090, 64913, 72385, 129826, 144770, 324565, 649130, 2012303, 4024606, 10061515, 20123030]

約数ペア:

[(1, 20123030), (2, 10061515), (5, 4024606), (10, 2012303), (31, 649130), (62, 324565), (139, 144770), (155, 129826), (278, 72385), (310, 64913), (467, 43090), (695, 28954), (934, 21545), (1390, 14477), (2335, 8618), (4309, 4670)]