16428860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{491}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 23246020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 491, 956, 982, 1195, 1673, 1964, 2390, 2455, 3346, 3437, 4780, 4910, 6692, 6874, 8365, 9820, 13748, 16730, 17185, 33460, 34370, 68740, 117349, 234698, 469396, 586745, 821443, 1173490, 1642886, 2346980, 3285772, 4107215, 8214430, 16428860]

約数ペア:

[(1, 16428860), (2, 8214430), (4, 4107215), (5, 3285772), (7, 2346980), (10, 1642886), (14, 1173490), (20, 821443), (28, 586745), (35, 469396), (70, 234698), (140, 117349), (239, 68740), (478, 34370), (491, 33460), (956, 17185), (982, 16730), (1195, 13748), (1673, 9820), (1964, 8365), (2390, 6874), (2455, 6692), (3346, 4910), (3437, 4780)]