19900175

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:739

約数の個数: 24

約数和(自身を含む): 26275104

約数和(自身を除く): 6374929

約数列:

[1, 5, 23, 25, 53, 115, 265, 575, 653, 1219, 1325, 3265, 6095, 15019, 16325, 30475, 34609, 75095, 173045, 375475, 796007, 865225, 3980035, 19900175]

約数ペア:

[(1, 19900175), (5, 3980035), (23, 865225), (25, 796007), (53, 375475), (115, 173045), (265, 75095), (575, 34609), (653, 30475), (1219, 16325), (1325, 15019), (3265, 6095)]