25940840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{6421}}^1$

素因数の和:6533

約数の個数: 32

約数和(自身を含む): 58953960

約数和(自身を除く): 33013120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 6421, 12842, 25684, 32105, 51368, 64210, 128420, 256840, 648521, 1297042, 2594084, 3242605, 5188168, 6485210, 12970420, 25940840]

約数ペア:

[(1, 25940840), (2, 12970420), (4, 6485210), (5, 5188168), (8, 3242605), (10, 2594084), (20, 1297042), (40, 648521), (101, 256840), (202, 128420), (404, 64210), (505, 51368), (808, 32105), (1010, 25684), (2020, 12842), (4040, 6421)]