78531400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 191315880

約数和(自身を除く): 112784480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 61, 82, 100, 122, 157, 164, 200, 205, 244, 305, 314, 328, 410, 488, 610, 628, 785, 820, 1025, 1220, 1256, 1525, 1570, 1640, 2050, 2440, 2501, 3050, 3140, 3925, 4100, 5002, 6100, 6280, 6437, 7850, 8200, 9577, 10004, 12200, 12505, 12874, 15700, 19154, 20008, 25010, 25748, 31400, 32185, 38308, 47885, 50020, 51496, 62525, 64370, 76616, 95770, 100040, 125050, 128740, 160925, 191540, 239425, 250100, 257480, 321850, 383080, 392657, 478850, 500200, 643700, 785314, 957700, 1287400, 1570628, 1915400, 1963285, 3141256, 3926570, 7853140, 9816425, 15706280, 19632850, 39265700, 78531400]

約数ペア:

[(1, 78531400), (2, 39265700), (4, 19632850), (5, 15706280), (8, 9816425), (10, 7853140), (20, 3926570), (25, 3141256), (40, 1963285), (41, 1915400), (50, 1570628), (61, 1287400), (82, 957700), (100, 785314), (122, 643700), (157, 500200), (164, 478850), (200, 392657), (205, 383080), (244, 321850), (305, 257480), (314, 250100), (328, 239425), (410, 191540), (488, 160925), (610, 128740), (628, 125050), (785, 100040), (820, 95770), (1025, 76616), (1220, 64370), (1256, 62525), (1525, 51496), (1570, 50020), (1640, 47885), (2050, 38308), (2440, 32185), (2501, 31400), (3050, 25748), (3140, 25010), (3925, 20008), (4100, 19154), (5002, 15700), (6100, 12874), (6280, 12505), (6437, 12200), (7850, 10004), (8200, 9577)]