20453905

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1\times {\mathrm{233}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 25041744

約数和(自身を除く): 4587839

約数列:

[1, 5, 97, 181, 233, 485, 905, 1165, 17557, 22601, 42173, 87785, 113005, 210865, 4090781, 20453905]

約数ペア:

[(1, 20453905), (5, 4090781), (97, 210865), (181, 113005), (233, 87785), (485, 42173), (905, 22601), (1165, 17557)]