15661120

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:575

約数の個数: 56

約数和(自身を含む): 37719000

約数和(自身を除く): 22057880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 449, 545, 872, 898, 1090, 1744, 1796, 2180, 2245, 3488, 3592, 4360, 4490, 6976, 7184, 8720, 8980, 14368, 17440, 17960, 28736, 34880, 35920, 48941, 71840, 97882, 143680, 195764, 244705, 391528, 489410, 783056, 978820, 1566112, 1957640, 3132224, 3915280, 7830560, 15661120]

約数ペア:

[(1, 15661120), (2, 7830560), (4, 3915280), (5, 3132224), (8, 1957640), (10, 1566112), (16, 978820), (20, 783056), (32, 489410), (40, 391528), (64, 244705), (80, 195764), (109, 143680), (160, 97882), (218, 71840), (320, 48941), (436, 35920), (449, 34880), (545, 28736), (872, 17960), (898, 17440), (1090, 14368), (1744, 8980), (1796, 8720), (2180, 7184), (2245, 6976), (3488, 4490), (3592, 4360)]