21435725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1627}}^1$

素因数の和:1685

約数の個数: 24

約数和(自身を含む): 29069568

約数和(自身を除く): 7633843

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1627, 2635, 8135, 13175, 27659, 40675, 50437, 138295, 252185, 691475, 857429, 1260925, 4287145, 21435725]

約数ペア:

[(1, 21435725), (5, 4287145), (17, 1260925), (25, 857429), (31, 691475), (85, 252185), (155, 138295), (425, 50437), (527, 40675), (775, 27659), (1627, 13175), (2635, 8135)]