21206560

素因数分解:

$2^5\times 5^1\times {\mathrm{132541}}^1$

素因数の和:132556

約数の個数: 24

約数和(自身を含む): 50100876

約数和(自身を除く): 28894316

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132541, 265082, 530164, 662705, 1060328, 1325410, 2120656, 2650820, 4241312, 5301640, 10603280, 21206560]

約数ペア:

[(1, 21206560), (2, 10603280), (4, 5301640), (5, 4241312), (8, 2650820), (10, 2120656), (16, 1325410), (20, 1060328), (32, 662705), (40, 530164), (80, 265082), (160, 132541)]