256540560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2539}}^1$

素因数の和:2976

約数の個数: 80

約数和(自身を含む): 797478720

約数和(自身を除く): 540938160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 421, 842, 1263, 1684, 2105, 2526, 2539, 3368, 4210, 5052, 5078, 6315, 6736, 7617, 8420, 10104, 10156, 12630, 12695, 15234, 16840, 20208, 20312, 25260, 25390, 30468, 33680, 38085, 40624, 50520, 50780, 60936, 76170, 101040, 101560, 121872, 152340, 203120, 304680, 609360, 1068919, 2137838, 3206757, 4275676, 5344595, 6413514, 8551352, 10689190, 12827028, 16033785, 17102704, 21378380, 25654056, 32067570, 42756760, 51308112, 64135140, 85513520, 128270280, 256540560]

約数ペア:

[(1, 256540560), (2, 128270280), (3, 85513520), (4, 64135140), (5, 51308112), (6, 42756760), (8, 32067570), (10, 25654056), (12, 21378380), (15, 17102704), (16, 16033785), (20, 12827028), (24, 10689190), (30, 8551352), (40, 6413514), (48, 5344595), (60, 4275676), (80, 3206757), (120, 2137838), (240, 1068919), (421, 609360), (842, 304680), (1263, 203120), (1684, 152340), (2105, 121872), (2526, 101560), (2539, 101040), (3368, 76170), (4210, 60936), (5052, 50780), (5078, 50520), (6315, 40624), (6736, 38085), (7617, 33680), (8420, 30468), (10104, 25390), (10156, 25260), (12630, 20312), (12695, 20208), (15234, 16840)]