20713120

素因数分解:

$2^5\times 5^1\times {\mathrm{129457}}^1$

素因数の和:129472

約数の個数: 24

約数和(自身を含む): 48935124

約数和(自身を除く): 28222004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129457, 258914, 517828, 647285, 1035656, 1294570, 2071312, 2589140, 4142624, 5178280, 10356560, 20713120]

約数ペア:

[(1, 20713120), (2, 10356560), (4, 5178280), (5, 4142624), (8, 2589140), (10, 2071312), (16, 1294570), (20, 1035656), (32, 647285), (40, 517828), (80, 258914), (160, 129457)]