18387985

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{6823}}^1$

素因数の和:6853

約数の個数: 24

約数和(自身を含む): 28005696

約数和(自身を除く): 9617711

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 6823, 34115, 47761, 75053, 238805, 334327, 375265, 525371, 1671635, 2626855, 3677597, 18387985]

約数ペア:

[(1, 18387985), (5, 3677597), (7, 2626855), (11, 1671635), (35, 525371), (49, 375265), (55, 334327), (77, 238805), (245, 75053), (385, 47761), (539, 34115), (2695, 6823)]