31211220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{809}}^1$

素因数の和:1464

約数の個数: 48

約数和(自身を含む): 87635520

約数和(自身を除く): 56424300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 643, 809, 1286, 1618, 1929, 2427, 2572, 3215, 3236, 3858, 4045, 4854, 6430, 7716, 8090, 9645, 9708, 12135, 12860, 16180, 19290, 24270, 38580, 48540, 520187, 1040374, 1560561, 2080748, 2600935, 3121122, 5201870, 6242244, 7802805, 10403740, 15605610, 31211220]

約数ペア:

[(1, 31211220), (2, 15605610), (3, 10403740), (4, 7802805), (5, 6242244), (6, 5201870), (10, 3121122), (12, 2600935), (15, 2080748), (20, 1560561), (30, 1040374), (60, 520187), (643, 48540), (809, 38580), (1286, 24270), (1618, 19290), (1929, 16180), (2427, 12860), (2572, 12135), (3215, 9708), (3236, 9645), (3858, 8090), (4045, 7716), (4854, 6430)]