7881640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{659}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 19958400

約数和(自身を除く): 12076760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 659, 920, 1196, 1318, 1495, 2392, 2636, 2990, 3295, 5272, 5980, 6590, 8567, 11960, 13180, 15157, 17134, 26360, 30314, 34268, 42835, 60628, 68536, 75785, 85670, 121256, 151570, 171340, 197041, 303140, 342680, 394082, 606280, 788164, 985205, 1576328, 1970410, 3940820, 7881640]

約数ペア:

[(1, 7881640), (2, 3940820), (4, 1970410), (5, 1576328), (8, 985205), (10, 788164), (13, 606280), (20, 394082), (23, 342680), (26, 303140), (40, 197041), (46, 171340), (52, 151570), (65, 121256), (92, 85670), (104, 75785), (115, 68536), (130, 60628), (184, 42835), (230, 34268), (260, 30314), (299, 26360), (460, 17134), (520, 15157), (598, 13180), (659, 11960), (920, 8567), (1196, 6590), (1318, 5980), (1495, 5272), (2392, 3295), (2636, 2990)]