20109460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{601}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 48545280

約数和(自身を除く): 28435820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 601, 956, 1195, 1202, 1673, 2390, 2404, 3005, 3346, 4207, 4780, 6010, 6692, 8365, 8414, 12020, 16730, 16828, 21035, 33460, 42070, 84140, 143639, 287278, 574556, 718195, 1005473, 1436390, 2010946, 2872780, 4021892, 5027365, 10054730, 20109460]

約数ペア:

[(1, 20109460), (2, 10054730), (4, 5027365), (5, 4021892), (7, 2872780), (10, 2010946), (14, 1436390), (20, 1005473), (28, 718195), (35, 574556), (70, 287278), (140, 143639), (239, 84140), (478, 42070), (601, 33460), (956, 21035), (1195, 16828), (1202, 16730), (1673, 12020), (2390, 8414), (2404, 8365), (3005, 6692), (3346, 6010), (4207, 4780)]