1581031640

素因数分解:

$2^3\times 5^1\times {\mathrm{2879}}^1\times {\mathrm{13729}}^1$

素因数の和:16619

約数の個数: 32

約数和(自身を含む): 3558816000

約数和(自身を除く): 1977784360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2879, 5758, 11516, 13729, 14395, 23032, 27458, 28790, 54916, 57580, 68645, 109832, 115160, 137290, 274580, 549160, 39525791, 79051582, 158103164, 197628955, 316206328, 395257910, 790515820, 1581031640]

約数ペア:

[(1, 1581031640), (2, 790515820), (4, 395257910), (5, 316206328), (8, 197628955), (10, 158103164), (20, 79051582), (40, 39525791), (2879, 549160), (5758, 274580), (11516, 137290), (13729, 115160), (14395, 109832), (23032, 68645), (27458, 57580), (28790, 54916)]