256811880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{164623}}^1$

素因数の和:164650

約数の個数: 64

約数和(自身を含む): 829704960

約数和(自身を除く): 572893080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 164623, 329246, 493869, 658492, 823115, 987738, 1316984, 1646230, 1975476, 2140099, 2469345, 3292460, 3950952, 4280198, 4938690, 6420297, 6584920, 8560396, 9877380, 10700495, 12840594, 17120792, 19754760, 21400990, 25681188, 32101485, 42801980, 51362376, 64202970, 85603960, 128405940, 256811880]

約数ペア:

[(1, 256811880), (2, 128405940), (3, 85603960), (4, 64202970), (5, 51362376), (6, 42801980), (8, 32101485), (10, 25681188), (12, 21400990), (13, 19754760), (15, 17120792), (20, 12840594), (24, 10700495), (26, 9877380), (30, 8560396), (39, 6584920), (40, 6420297), (52, 4938690), (60, 4280198), (65, 3950952), (78, 3292460), (104, 2469345), (120, 2140099), (130, 1975476), (156, 1646230), (195, 1316984), (260, 987738), (312, 823115), (390, 658492), (520, 493869), (780, 329246), (1560, 164623)]