641576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 1344000

約数和(自身を除く): 702424

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 199, 248, 398, 403, 796, 806, 1592, 1612, 2587, 3224, 5174, 6169, 10348, 12338, 20696, 24676, 49352, 80197, 160394, 320788, 641576]

約数ペア:

[(1, 641576), (2, 320788), (4, 160394), (8, 80197), (13, 49352), (26, 24676), (31, 20696), (52, 12338), (62, 10348), (104, 6169), (124, 5174), (199, 3224), (248, 2587), (398, 1612), (403, 1592), (796, 806)]