18101920

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4919}}^1$

素因数の和:4957

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 26532320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 4919, 9838, 19676, 24595, 39352, 49190, 78704, 98380, 113137, 157408, 196760, 226274, 393520, 452548, 565685, 787040, 905096, 1131370, 1810192, 2262740, 3620384, 4525480, 9050960, 18101920]

約数ペア:

[(1, 18101920), (2, 9050960), (4, 4525480), (5, 3620384), (8, 2262740), (10, 1810192), (16, 1131370), (20, 905096), (23, 787040), (32, 565685), (40, 452548), (46, 393520), (80, 226274), (92, 196760), (115, 157408), (160, 113137), (184, 98380), (230, 78704), (368, 49190), (460, 39352), (736, 24595), (920, 19676), (1840, 9838), (3680, 4919)]