17968220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 39583488

約数和(自身を除く): 21615268

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 124, 146, 155, 292, 310, 365, 397, 620, 730, 794, 1460, 1588, 1985, 2263, 3970, 4526, 7940, 9052, 11315, 12307, 22630, 24614, 28981, 45260, 49228, 57962, 61535, 115924, 123070, 144905, 246140, 289810, 579620, 898411, 1796822, 3593644, 4492055, 8984110, 17968220]

約数ペア:

[(1, 17968220), (2, 8984110), (4, 4492055), (5, 3593644), (10, 1796822), (20, 898411), (31, 579620), (62, 289810), (73, 246140), (124, 144905), (146, 123070), (155, 115924), (292, 61535), (310, 57962), (365, 49228), (397, 45260), (620, 28981), (730, 24614), (794, 22630), (1460, 12307), (1588, 11315), (1985, 9052), (2263, 7940), (3970, 4526)]