638356080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{4111}}^1$

素因数の和:4774

約数の個数: 80

約数和(自身を含む): 1982444544

約数和(自身を除く): 1344088464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 647, 1294, 1941, 2588, 3235, 3882, 4111, 5176, 6470, 7764, 8222, 9705, 10352, 12333, 12940, 15528, 16444, 19410, 20555, 24666, 25880, 31056, 32888, 38820, 41110, 49332, 51760, 61665, 65776, 77640, 82220, 98664, 123330, 155280, 164440, 197328, 246660, 328880, 493320, 986640, 2659817, 5319634, 7979451, 10639268, 13299085, 15958902, 21278536, 26598170, 31917804, 39897255, 42557072, 53196340, 63835608, 79794510, 106392680, 127671216, 159589020, 212785360, 319178040, 638356080]

約数ペア:

[(1, 638356080), (2, 319178040), (3, 212785360), (4, 159589020), (5, 127671216), (6, 106392680), (8, 79794510), (10, 63835608), (12, 53196340), (15, 42557072), (16, 39897255), (20, 31917804), (24, 26598170), (30, 21278536), (40, 15958902), (48, 13299085), (60, 10639268), (80, 7979451), (120, 5319634), (240, 2659817), (647, 986640), (1294, 493320), (1941, 328880), (2588, 246660), (3235, 197328), (3882, 164440), (4111, 155280), (5176, 123330), (6470, 98664), (7764, 82220), (8222, 77640), (9705, 65776), (10352, 61665), (12333, 51760), (12940, 49332), (15528, 41110), (16444, 38820), (19410, 32888), (20555, 31056), (24666, 25880)]