81306915

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{223}}^2$

素因数の和:563

約数の個数: 24

約数和(自身を含む): 131875920

約数和(自身を除く): 50569005

約数列:

[1, 3, 5, 15, 109, 223, 327, 545, 669, 1115, 1635, 3345, 24307, 49729, 72921, 121535, 149187, 248645, 364605, 745935, 5420461, 16261383, 27102305, 81306915]

約数ペア:

[(1, 81306915), (3, 27102305), (5, 16261383), (15, 5420461), (109, 745935), (223, 364605), (327, 248645), (545, 149187), (669, 121535), (1115, 72921), (1635, 49729), (3345, 24307)]