21351278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{9227}}^1$

素因数の和:9331

約数の個数: 16

約数和(自身を含む): 34881840

約数和(自身を除く): 13530562

約数列:

[1, 2, 13, 26, 89, 178, 1157, 2314, 9227, 18454, 119951, 239902, 821203, 1642406, 10675639, 21351278]

約数ペア:

[(1, 21351278), (2, 10675639), (13, 1642406), (26, 821203), (89, 239902), (178, 119951), (1157, 18454), (2314, 9227)]