80251640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{286613}}^1$

素因数の和:286631

約数の個数: 32

約数和(自身を含む): 206362080

約数和(自身を除く): 126110440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 286613, 573226, 1146452, 1433065, 2006291, 2292904, 2866130, 4012582, 5732260, 8025164, 10031455, 11464520, 16050328, 20062910, 40125820, 80251640]

約数ペア:

[(1, 80251640), (2, 40125820), (4, 20062910), (5, 16050328), (7, 11464520), (8, 10031455), (10, 8025164), (14, 5732260), (20, 4012582), (28, 2866130), (35, 2292904), (40, 2006291), (56, 1433065), (70, 1146452), (140, 573226), (280, 286613)]