21136311

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2969}}^1$

素因数の和:3095

約数の個数: 24

約数和(自身を含む): 35212320

約数和(自身を除く): 14076009

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2969, 7119, 8907, 20783, 26721, 62349, 187047, 335497, 1006491, 2348479, 3019473, 7045437, 21136311]

約数ペア:

[(1, 21136311), (3, 7045437), (7, 3019473), (9, 2348479), (21, 1006491), (63, 335497), (113, 187047), (339, 62349), (791, 26721), (1017, 20783), (2373, 8907), (2969, 7119)]