21291010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{823}}^1$

素因数の和:1042

約数の個数: 32

約数和(自身を含む): 41529600

約数和(自身を除く): 20238590

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 823, 995, 1646, 1990, 2587, 4115, 5174, 8230, 10699, 12935, 21398, 25870, 53495, 106990, 163777, 327554, 818885, 1637770, 2129101, 4258202, 10645505, 21291010]

約数ペア:

[(1, 21291010), (2, 10645505), (5, 4258202), (10, 2129101), (13, 1637770), (26, 818885), (65, 327554), (130, 163777), (199, 106990), (398, 53495), (823, 25870), (995, 21398), (1646, 12935), (1990, 10699), (2587, 8230), (4115, 5174)]