21196578

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{821}}^1$

素因数の和:1170

約数の個数: 32

約数和(自身を含む): 45847872

約数和(自身を除く): 24651294

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 331, 662, 821, 993, 1642, 1986, 2463, 4303, 4926, 8606, 10673, 12909, 21346, 25818, 32019, 64038, 271751, 543502, 815253, 1630506, 3532763, 7065526, 10598289, 21196578]

約数ペア:

[(1, 21196578), (2, 10598289), (3, 7065526), (6, 3532763), (13, 1630506), (26, 815253), (39, 543502), (78, 271751), (331, 64038), (662, 32019), (821, 25818), (993, 21346), (1642, 12909), (1986, 10673), (2463, 8606), (4303, 4926)]