20123657855

素因数分解:

$5^1\times 7^2\times {\mathrm{241}}^1\times {\mathrm{340819}}^1$

素因数の和:341079

約数の個数: 24

約数和(自身を含む): 28207626480

約数和(自身を除く): 8083968625

約数列:

[1, 5, 7, 35, 49, 241, 245, 1205, 1687, 8435, 11809, 59045, 340819, 1704095, 2385733, 11928665, 16700131, 82137379, 83500655, 410686895, 574961653, 2874808265, 4024731571, 20123657855]

約数ペア:

[(1, 20123657855), (5, 4024731571), (7, 2874808265), (35, 574961653), (49, 410686895), (241, 83500655), (245, 82137379), (1205, 16700131), (1687, 11928665), (8435, 2385733), (11809, 1704095), (59045, 340819)]