20928830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{809}}^1$

素因数の和:1028

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19895170

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 809, 995, 1618, 1990, 2587, 4045, 5174, 8090, 10517, 12935, 21034, 25870, 52585, 105170, 160991, 321982, 804955, 1609910, 2092883, 4185766, 10464415, 20928830]

約数ペア:

[(1, 20928830), (2, 10464415), (5, 4185766), (10, 2092883), (13, 1609910), (26, 804955), (65, 321982), (130, 160991), (199, 105170), (398, 52585), (809, 25870), (995, 21034), (1618, 12935), (1990, 10517), (2587, 8090), (4045, 5174)]