12970420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{6421}}^1$

素因数の和:6531

約数の個数: 24

約数和(自身を含む): 27511848

約数和(自身を除く): 14541428

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 6421, 12842, 25684, 32105, 64210, 128420, 648521, 1297042, 2594084, 3242605, 6485210, 12970420]

約数ペア:

[(1, 12970420), (2, 6485210), (4, 3242605), (5, 2594084), (10, 1297042), (20, 648521), (101, 128420), (202, 64210), (404, 32105), (505, 25684), (1010, 12842), (2020, 6421)]