21304460

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4457}}^1$

素因数の和:4705

約数の個数: 24

約数和(自身を含む): 44936640

約数和(自身を除く): 23632180

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4457, 4780, 8914, 17828, 22285, 44570, 89140, 1065223, 2130446, 4260892, 5326115, 10652230, 21304460]

約数ペア:

[(1, 21304460), (2, 10652230), (4, 5326115), (5, 4260892), (10, 2130446), (20, 1065223), (239, 89140), (478, 44570), (956, 22285), (1195, 17828), (2390, 8914), (4457, 4780)]