21392925

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1889}}^1$

素因数の和:2053

約数の個数: 24

約数和(自身を含む): 35622720

約数和(自身を除く): 14229795

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1889, 2265, 3775, 5667, 9445, 11325, 28335, 47225, 141675, 285239, 855717, 1426195, 4278585, 7130975, 21392925]

約数ペア:

[(1, 21392925), (3, 7130975), (5, 4278585), (15, 1426195), (25, 855717), (75, 285239), (151, 141675), (453, 47225), (755, 28335), (1889, 11325), (2265, 9445), (3775, 5667)]