80918680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65257}}^1$

素因数の和:65299

約数の個数: 32

約数和(自身を含む): 187943040

約数和(自身を除く): 107024360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 65257, 130514, 261028, 326285, 522056, 652570, 1305140, 2022967, 2610280, 4045934, 8091868, 10114835, 16183736, 20229670, 40459340, 80918680]

約数ペア:

[(1, 80918680), (2, 40459340), (4, 20229670), (5, 16183736), (8, 10114835), (10, 8091868), (20, 4045934), (31, 2610280), (40, 2022967), (62, 1305140), (124, 652570), (155, 522056), (248, 326285), (310, 261028), (620, 130514), (1240, 65257)]