21588725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{643}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 28748160

約数和(自身を除く): 7159435

約数列:

[1, 5, 17, 25, 79, 85, 395, 425, 643, 1343, 1975, 3215, 6715, 10931, 16075, 33575, 50797, 54655, 253985, 273275, 863549, 1269925, 4317745, 21588725]

約数ペア:

[(1, 21588725), (5, 4317745), (17, 1269925), (25, 863549), (79, 273275), (85, 253985), (395, 54655), (425, 50797), (643, 33575), (1343, 16075), (1975, 10931), (3215, 6715)]