721844440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{5749}}^1$

素因数の和:5876

約数の個数: 64

約数和(自身を含む): 1684980000

約数和(自身を除く): 963135560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 86, 146, 172, 215, 292, 344, 365, 430, 584, 730, 860, 1460, 1720, 2920, 3139, 5749, 6278, 11498, 12556, 15695, 22996, 25112, 28745, 31390, 45992, 57490, 62780, 114980, 125560, 229960, 247207, 419677, 494414, 839354, 988828, 1236035, 1678708, 1977656, 2098385, 2472070, 3357416, 4196770, 4944140, 8393540, 9888280, 16787080, 18046111, 36092222, 72184444, 90230555, 144368888, 180461110, 360922220, 721844440]

約数ペア:

[(1, 721844440), (2, 360922220), (4, 180461110), (5, 144368888), (8, 90230555), (10, 72184444), (20, 36092222), (40, 18046111), (43, 16787080), (73, 9888280), (86, 8393540), (146, 4944140), (172, 4196770), (215, 3357416), (292, 2472070), (344, 2098385), (365, 1977656), (430, 1678708), (584, 1236035), (730, 988828), (860, 839354), (1460, 494414), (1720, 419677), (2920, 247207), (3139, 229960), (5749, 125560), (6278, 114980), (11498, 62780), (12556, 57490), (15695, 45992), (22996, 31390), (25112, 28745)]