55997780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 122304000

約数和(自身を除く): 66306220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 181, 310, 362, 499, 620, 724, 905, 998, 1810, 1996, 2495, 3620, 4990, 5611, 9980, 11222, 15469, 22444, 28055, 30938, 56110, 61876, 77345, 90319, 112220, 154690, 180638, 309380, 361276, 451595, 903190, 1806380, 2799889, 5599778, 11199556, 13999445, 27998890, 55997780]

約数ペア:

[(1, 55997780), (2, 27998890), (4, 13999445), (5, 11199556), (10, 5599778), (20, 2799889), (31, 1806380), (62, 903190), (124, 451595), (155, 361276), (181, 309380), (310, 180638), (362, 154690), (499, 112220), (620, 90319), (724, 77345), (905, 61876), (998, 56110), (1810, 30938), (1996, 28055), (2495, 22444), (3620, 15469), (4990, 11222), (5611, 9980)]