21529225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{283}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 28524960

約数和(自身を除く): 6995735

約数列:

[1, 5, 17, 25, 85, 179, 283, 425, 895, 1415, 3043, 4475, 4811, 7075, 15215, 24055, 50657, 76075, 120275, 253285, 861169, 1266425, 4305845, 21529225]

約数ペア:

[(1, 21529225), (5, 4305845), (17, 1266425), (25, 861169), (85, 253285), (179, 120275), (283, 76075), (425, 50657), (895, 24055), (1415, 15215), (3043, 7075), (4475, 4811)]