20158749988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{840929}}^1$

素因数の和:841407

約数の個数: 24

約数和(自身を含む): 38073946680

約数和(自身を除く): 17915196692

約数列:

[1, 2, 4, 13, 26, 52, 461, 922, 1844, 5993, 11986, 23972, 840929, 1681858, 3363716, 10932077, 21864154, 43728308, 387668269, 775336538, 1550673076, 5039687497, 10079374994, 20158749988]

約数ペア:

[(1, 20158749988), (2, 10079374994), (4, 5039687497), (13, 1550673076), (26, 775336538), (52, 387668269), (461, 43728308), (922, 21864154), (1844, 10932077), (5993, 3363716), (11986, 1681858), (23972, 840929)]