21493525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 28551744

約数和(自身を除く): 7058219

約数列:

[1, 5, 17, 25, 85, 103, 425, 491, 515, 1751, 2455, 2575, 8347, 8755, 12275, 41735, 43775, 50573, 208675, 252865, 859741, 1264325, 4298705, 21493525]

約数ペア:

[(1, 21493525), (5, 4298705), (17, 1264325), (25, 859741), (85, 252865), (103, 208675), (425, 50573), (491, 43775), (515, 41735), (1751, 12275), (2455, 8755), (2575, 8347)]