21043516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4547}}^1$

素因数の和:4653

約数の個数: 24

約数和(自身を含む): 40113360

約数和(自身を除く): 19069844

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4547, 4628, 9094, 18188, 59111, 118222, 236444, 404683, 809366, 1618732, 5260879, 10521758, 21043516]

約数ペア:

[(1, 21043516), (2, 10521758), (4, 5260879), (13, 1618732), (26, 809366), (52, 404683), (89, 236444), (178, 118222), (356, 59111), (1157, 18188), (2314, 9094), (4547, 4628)]