21421631

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 28075008

約数和(自身を除く): 6653377

約数列:

[1, 7, 11, 37, 73, 77, 103, 259, 407, 511, 721, 803, 1133, 2701, 2849, 3811, 5621, 7519, 7931, 18907, 26677, 29711, 41921, 52633, 82709, 207977, 278203, 293447, 578963, 1947421, 3060233, 21421631]

約数ペア:

[(1, 21421631), (7, 3060233), (11, 1947421), (37, 578963), (73, 293447), (77, 278203), (103, 207977), (259, 82709), (407, 52633), (511, 41921), (721, 29711), (803, 26677), (1133, 18907), (2701, 7931), (2849, 7519), (3811, 5621)]