15420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 43344

約数和(自身を除く): 27924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1542, 2570, 3084, 3855, 5140, 7710, 15420]

約数ペア:

[(1, 15420), (2, 7710), (3, 5140), (4, 3855), (5, 3084), (6, 2570), (10, 1542), (12, 1285), (15, 1028), (20, 771), (30, 514), (60, 257)]