21515764

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{2411}}^1$

素因数の和:2535

約数の個数: 24

約数和(自身を含む): 39711168

約数和(自身を除く): 18195404

約数列:

[1, 2, 4, 23, 46, 92, 97, 194, 388, 2231, 2411, 4462, 4822, 8924, 9644, 55453, 110906, 221812, 233867, 467734, 935468, 5378941, 10757882, 21515764]

約数ペア:

[(1, 21515764), (2, 10757882), (4, 5378941), (23, 935468), (46, 467734), (92, 233867), (97, 221812), (194, 110906), (388, 55453), (2231, 9644), (2411, 8924), (4462, 4822)]