78816400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{659}}^1$

素因数の和:713

約数の個数: 120

約数和(自身を含む): 213111360

約数和(自身を除く): 134294960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 130, 184, 200, 208, 230, 260, 299, 325, 368, 400, 460, 520, 575, 598, 650, 659, 920, 1040, 1150, 1196, 1300, 1318, 1495, 1840, 2300, 2392, 2600, 2636, 2990, 3295, 4600, 4784, 5200, 5272, 5980, 6590, 7475, 8567, 9200, 10544, 11960, 13180, 14950, 15157, 16475, 17134, 23920, 26360, 29900, 30314, 32950, 34268, 42835, 52720, 59800, 60628, 65900, 68536, 75785, 85670, 119600, 121256, 131800, 137072, 151570, 171340, 197041, 214175, 242512, 263600, 303140, 342680, 378925, 394082, 428350, 606280, 685360, 757850, 788164, 856700, 985205, 1212560, 1515700, 1576328, 1713400, 1970410, 3031400, 3152656, 3426800, 3940820, 4926025, 6062800, 7881640, 9852050, 15763280, 19704100, 39408200, 78816400]

約数ペア:

[(1, 78816400), (2, 39408200), (4, 19704100), (5, 15763280), (8, 9852050), (10, 7881640), (13, 6062800), (16, 4926025), (20, 3940820), (23, 3426800), (25, 3152656), (26, 3031400), (40, 1970410), (46, 1713400), (50, 1576328), (52, 1515700), (65, 1212560), (80, 985205), (92, 856700), (100, 788164), (104, 757850), (115, 685360), (130, 606280), (184, 428350), (200, 394082), (208, 378925), (230, 342680), (260, 303140), (299, 263600), (325, 242512), (368, 214175), (400, 197041), (460, 171340), (520, 151570), (575, 137072), (598, 131800), (650, 121256), (659, 119600), (920, 85670), (1040, 75785), (1150, 68536), (1196, 65900), (1300, 60628), (1318, 59800), (1495, 52720), (1840, 42835), (2300, 34268), (2392, 32950), (2600, 30314), (2636, 29900), (2990, 26360), (3295, 23920), (4600, 17134), (4784, 16475), (5200, 15157), (5272, 14950), (5980, 13180), (6590, 11960), (7475, 10544), (8567, 9200)]