20520370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6863}}^1$

素因数の和:6906

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 20993102

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6863, 13726, 34315, 68630, 89219, 157849, 178438, 315698, 446095, 789245, 892190, 1578490, 2052037, 4104074, 10260185, 20520370]

約数ペア:

[(1, 20520370), (2, 10260185), (5, 4104074), (10, 2052037), (13, 1578490), (23, 892190), (26, 789245), (46, 446095), (65, 315698), (115, 178438), (130, 157849), (230, 89219), (299, 68630), (598, 34315), (1495, 13726), (2990, 6863)]