123751640

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{6301}}^1$

素因数の和:6803

約数の個数: 32

約数和(自身を含む): 279052560

約数和(自身を除く): 155300920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 6301, 9820, 12602, 19640, 25204, 31505, 50408, 63010, 126020, 252040, 3093791, 6187582, 12375164, 15468955, 24750328, 30937910, 61875820, 123751640]

約数ペア:

[(1, 123751640), (2, 61875820), (4, 30937910), (5, 24750328), (8, 15468955), (10, 12375164), (20, 6187582), (40, 3093791), (491, 252040), (982, 126020), (1964, 63010), (2455, 50408), (3928, 31505), (4910, 25204), (6301, 19640), (9820, 12602)]