21110978

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{16943}}^1$

素因数の和:17041

約数の個数: 16

約数和(自身を含む): 36599040

約数和(自身を除く): 15488062

約数列:

[1, 2, 7, 14, 89, 178, 623, 1246, 16943, 33886, 118601, 237202, 1507927, 3015854, 10555489, 21110978]

約数ペア:

[(1, 21110978), (2, 10555489), (7, 3015854), (14, 1507927), (89, 237202), (178, 118601), (623, 33886), (1246, 16943)]