21971378

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4519}}^1$

素因数の和:4562

約数の個数: 32

約数和(自身を含む): 41005440

約数和(自身を除く): 19034062

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 286, 374, 442, 2431, 4519, 4862, 9038, 49709, 58747, 76823, 99418, 117494, 153646, 646217, 845053, 998699, 1292434, 1690106, 1997398, 10985689, 21971378]

約数ペア:

[(1, 21971378), (2, 10985689), (11, 1997398), (13, 1690106), (17, 1292434), (22, 998699), (26, 845053), (34, 646217), (143, 153646), (187, 117494), (221, 99418), (286, 76823), (374, 58747), (442, 49709), (2431, 9038), (4519, 4862)]