21856406

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{76421}}^1$

素因数の和:76447

約数の個数: 16

約数和(自身を含む): 38516688

約数和(自身を除く): 16660282

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 76421, 152842, 840631, 993473, 1681262, 1986946, 10928203, 21856406]

約数ペア:

[(1, 21856406), (2, 10928203), (11, 1986946), (13, 1681262), (22, 993473), (26, 840631), (143, 152842), (286, 76421)]