12721390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1061}}^1$

素因数の和:1188

約数の個数: 32

約数和(自身を含む): 25233120

約数和(自身を除く): 12511730

約数列:

[1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1061, 1090, 1199, 2122, 2398, 5305, 5995, 10610, 11671, 11990, 23342, 58355, 115649, 116710, 231298, 578245, 1156490, 1272139, 2544278, 6360695, 12721390]

約数ペア:

[(1, 12721390), (2, 6360695), (5, 2544278), (10, 1272139), (11, 1156490), (22, 578245), (55, 231298), (109, 116710), (110, 115649), (218, 58355), (545, 23342), (1061, 11990), (1090, 11671), (1199, 10610), (2122, 5995), (2398, 5305)]