21185645

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 8231827

約数列:

[1, 5, 13, 23, 37, 65, 115, 185, 299, 383, 481, 851, 1495, 1915, 2405, 4255, 4979, 8809, 11063, 14171, 24895, 44045, 55315, 70855, 114517, 184223, 325933, 572585, 921115, 1629665, 4237129, 21185645]

約数ペア:

[(1, 21185645), (5, 4237129), (13, 1629665), (23, 921115), (37, 572585), (65, 325933), (115, 184223), (185, 114517), (299, 70855), (383, 55315), (481, 44045), (851, 24895), (1495, 14171), (1915, 11063), (2405, 8809), (4255, 4979)]