25321960

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1997}}^1$

素因数の和:2325

約数の個数: 32

約数和(自身を含む): 57182760

約数和(自身を除く): 31860800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 1997, 2536, 3170, 3994, 6340, 7988, 9985, 12680, 15976, 19970, 39940, 79880, 633049, 1266098, 2532196, 3165245, 5064392, 6330490, 12660980, 25321960]

約数ペア:

[(1, 25321960), (2, 12660980), (4, 6330490), (5, 5064392), (8, 3165245), (10, 2532196), (20, 1266098), (40, 633049), (317, 79880), (634, 39940), (1268, 19970), (1585, 15976), (1997, 12680), (2536, 9985), (3170, 7988), (3994, 6340)]