81665740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{10831}}^1$

素因数の和:10882

約数の個数: 48

約数和(自身を含む): 191076480

約数和(自身を除く): 109410740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 3770, 7540, 10831, 21662, 43324, 54155, 108310, 140803, 216620, 281606, 314099, 563212, 628198, 704015, 1256396, 1408030, 1570495, 2816060, 3140990, 4083287, 6281980, 8166574, 16333148, 20416435, 40832870, 81665740]

約数ペア:

[(1, 81665740), (2, 40832870), (4, 20416435), (5, 16333148), (10, 8166574), (13, 6281980), (20, 4083287), (26, 3140990), (29, 2816060), (52, 1570495), (58, 1408030), (65, 1256396), (116, 704015), (130, 628198), (145, 563212), (260, 314099), (290, 281606), (377, 216620), (580, 140803), (754, 108310), (1508, 54155), (1885, 43324), (3770, 21662), (7540, 10831)]