645554920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{116107}}^1$

素因数の和:116257

約数の個数: 32

約数和(自身を含む): 1462960800

約数和(自身を除く): 817405880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 116107, 232214, 464428, 580535, 928856, 1161070, 2322140, 4644280, 16138873, 32277746, 64555492, 80694365, 129110984, 161388730, 322777460, 645554920]

約数ペア:

[(1, 645554920), (2, 322777460), (4, 161388730), (5, 129110984), (8, 80694365), (10, 64555492), (20, 32277746), (40, 16138873), (139, 4644280), (278, 2322140), (556, 1161070), (695, 928856), (1112, 580535), (1390, 464428), (2780, 232214), (5560, 116107)]