20967830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{653}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 43085520

約数和(自身を除く): 22117690

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 653, 845, 1235, 1306, 1690, 2470, 3211, 3265, 6422, 6530, 8489, 12407, 16055, 16978, 24814, 32110, 42445, 62035, 84890, 110357, 124070, 161291, 220714, 322582, 551785, 806455, 1103570, 1612910, 2096783, 4193566, 10483915, 20967830]

約数ペア:

[(1, 20967830), (2, 10483915), (5, 4193566), (10, 2096783), (13, 1612910), (19, 1103570), (26, 806455), (38, 551785), (65, 322582), (95, 220714), (130, 161291), (169, 124070), (190, 110357), (247, 84890), (338, 62035), (494, 42445), (653, 32110), (845, 24814), (1235, 16978), (1306, 16055), (1690, 12407), (2470, 8489), (3211, 6530), (3265, 6422)]