18640480

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1031}}^1$

素因数の和:1159

約数の個数: 48

約数和(自身を含む): 44470944

約数和(自身を除く): 25830464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 904, 1031, 1130, 1808, 2062, 2260, 3616, 4124, 4520, 5155, 8248, 9040, 10310, 16496, 18080, 20620, 32992, 41240, 82480, 116503, 164960, 233006, 466012, 582515, 932024, 1165030, 1864048, 2330060, 3728096, 4660120, 9320240, 18640480]

約数ペア:

[(1, 18640480), (2, 9320240), (4, 4660120), (5, 3728096), (8, 2330060), (10, 1864048), (16, 1165030), (20, 932024), (32, 582515), (40, 466012), (80, 233006), (113, 164960), (160, 116503), (226, 82480), (452, 41240), (565, 32992), (904, 20620), (1031, 18080), (1130, 16496), (1808, 10310), (2062, 9040), (2260, 8248), (3616, 5155), (4124, 4520)]