25811560

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{6389}}^1$

素因数の和:6501

約数の個数: 32

約数和(自身を含む): 58660200

約数和(自身を除く): 32848640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 6389, 12778, 25556, 31945, 51112, 63890, 127780, 255560, 645289, 1290578, 2581156, 3226445, 5162312, 6452890, 12905780, 25811560]

約数ペア:

[(1, 25811560), (2, 12905780), (4, 6452890), (5, 5162312), (8, 3226445), (10, 2581156), (20, 1290578), (40, 645289), (101, 255560), (202, 127780), (404, 63890), (505, 51112), (808, 31945), (1010, 25556), (2020, 12778), (4040, 6389)]