318680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 743040

約数和(自身を除く): 424360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 257, 310, 514, 620, 1028, 1240, 1285, 2056, 2570, 5140, 7967, 10280, 15934, 31868, 39835, 63736, 79670, 159340, 318680]

約数ペア:

[(1, 318680), (2, 159340), (4, 79670), (5, 63736), (8, 39835), (10, 31868), (20, 15934), (31, 10280), (40, 7967), (62, 5140), (124, 2570), (155, 2056), (248, 1285), (257, 1240), (310, 1028), (514, 620)]