21125578

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1\times {\mathrm{1069}}^1$

素因数の和:1353

約数の個数: 16

約数和(自身を含む): 32626440

約数和(自身を除く): 11500862

約数列:

[1, 2, 41, 82, 241, 482, 1069, 2138, 9881, 19762, 43829, 87658, 257629, 515258, 10562789, 21125578]

約数ペア:

[(1, 21125578), (2, 10562789), (41, 515258), (82, 257629), (241, 87658), (482, 43829), (1069, 19762), (2138, 9881)]