12778520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3163}}^1$

素因数の和:3275

約数の個数: 32

約数和(自身を含む): 29045520

約数和(自身を除く): 16267000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 3163, 4040, 6326, 12652, 15815, 25304, 31630, 63260, 126520, 319463, 638926, 1277852, 1597315, 2555704, 3194630, 6389260, 12778520]

約数ペア:

[(1, 12778520), (2, 6389260), (4, 3194630), (5, 2555704), (8, 1597315), (10, 1277852), (20, 638926), (40, 319463), (101, 126520), (202, 63260), (404, 31630), (505, 25304), (808, 15815), (1010, 12652), (2020, 6326), (3163, 4040)]