21475425

素因数分解:

$3^1\times 5^2\times {\mathrm{281}}^1\times {\mathrm{1019}}^1$

素因数の和:1313

約数の個数: 24

約数和(自身を含む): 35667360

約数和(自身を除く): 14191935

約数列:

[1, 3, 5, 15, 25, 75, 281, 843, 1019, 1405, 3057, 4215, 5095, 7025, 15285, 21075, 25475, 76425, 286339, 859017, 1431695, 4295085, 7158475, 21475425]

約数ペア:

[(1, 21475425), (3, 7158475), (5, 4295085), (15, 1431695), (25, 859017), (75, 286339), (281, 76425), (843, 25475), (1019, 21075), (1405, 15285), (3057, 7025), (4215, 5095)]