9978380

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8179}}^1$

素因数の和:8249

約数の個数: 24

約数和(自身を含む): 21300720

約数和(自身を除く): 11322340

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 8179, 16358, 32716, 40895, 81790, 163580, 498919, 997838, 1995676, 2494595, 4989190, 9978380]

約数ペア:

[(1, 9978380), (2, 4989190), (4, 2494595), (5, 1995676), (10, 997838), (20, 498919), (61, 163580), (122, 81790), (244, 40895), (305, 32716), (610, 16358), (1220, 8179)]