25283920

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{997}}^1$

素因数の和:1327

約数の個数: 40

約数和(自身を含む): 59029704

約数和(自身を除く): 33745784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 997, 1268, 1585, 1994, 2536, 3170, 3988, 4985, 5072, 6340, 7976, 9970, 12680, 15952, 19940, 25360, 39880, 79760, 316049, 632098, 1264196, 1580245, 2528392, 3160490, 5056784, 6320980, 12641960, 25283920]

約数ペア:

[(1, 25283920), (2, 12641960), (4, 6320980), (5, 5056784), (8, 3160490), (10, 2528392), (16, 1580245), (20, 1264196), (40, 632098), (80, 316049), (317, 79760), (634, 39880), (997, 25360), (1268, 19940), (1585, 15952), (1994, 12680), (2536, 9970), (3170, 7976), (3988, 6340), (4985, 5072)]