20458225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1301}}^1$

素因数の和:1365

約数の個数: 24

約数和(自身を含む): 27607608

約数和(自身を除く): 7149383

約数列:

[1, 5, 17, 25, 37, 85, 185, 425, 629, 925, 1301, 3145, 6505, 15725, 22117, 32525, 48137, 110585, 240685, 552925, 818329, 1203425, 4091645, 20458225]

約数ペア:

[(1, 20458225), (5, 4091645), (17, 1203425), (25, 818329), (37, 552925), (85, 240685), (185, 110585), (425, 48137), (629, 32525), (925, 22117), (1301, 15725), (3145, 6505)]