21500025

素因数分解:

$3^1\times 5^2\times {\mathrm{439}}^1\times {\mathrm{653}}^1$

素因数の和:1105

約数の個数: 24

約数和(自身を含む): 35682240

約数和(自身を除く): 14182215

約数列:

[1, 3, 5, 15, 25, 75, 439, 653, 1317, 1959, 2195, 3265, 6585, 9795, 10975, 16325, 32925, 48975, 286667, 860001, 1433335, 4300005, 7166675, 21500025]

約数ペア:

[(1, 21500025), (3, 7166675), (5, 4300005), (15, 1433335), (25, 860001), (75, 286667), (439, 48975), (653, 32925), (1317, 16325), (1959, 10975), (2195, 9795), (3265, 6585)]