21291358

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{31219}}^1$

素因数の和:31263

約数の個数: 16

約数和(自身を含む): 35965440

約数和(自身を除く): 14674082

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 31219, 62438, 343409, 686818, 967789, 1935578, 10645679, 21291358]

約数ペア:

[(1, 21291358), (2, 10645679), (11, 1935578), (22, 967789), (31, 686818), (62, 343409), (341, 62438), (682, 31219)]