21683075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 28734768

約数和(自身を除く): 7051693

約数列:

[1, 5, 17, 25, 85, 163, 313, 425, 815, 1565, 2771, 4075, 5321, 7825, 13855, 26605, 51019, 69275, 133025, 255095, 867323, 1275475, 4336615, 21683075]

約数ペア:

[(1, 21683075), (5, 4336615), (17, 1275475), (25, 867323), (85, 255095), (163, 133025), (313, 69275), (425, 51019), (815, 26605), (1565, 13855), (2771, 7825), (4075, 5321)]