18858725

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:437

約数の個数: 24

約数和(自身を含む): 24453792

約数和(自身を除く): 5595067

約数列:

[1, 5, 25, 43, 53, 215, 265, 331, 1075, 1325, 1655, 2279, 8275, 11395, 14233, 17543, 56975, 71165, 87715, 355825, 438575, 754349, 3771745, 18858725]

約数ペア:

[(1, 18858725), (5, 3771745), (25, 754349), (43, 438575), (53, 355825), (215, 87715), (265, 71165), (331, 56975), (1075, 17543), (1325, 14233), (1655, 11395), (2279, 8275)]