21221226

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3943}}^1$

素因数の和:3987

約数の個数: 48

約数和(自身を含む): 51682176

約数和(自身を除く): 30460950

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 39, 46, 69, 78, 117, 138, 207, 234, 299, 414, 598, 897, 1794, 2691, 3943, 5382, 7886, 11829, 23658, 35487, 51259, 70974, 90689, 102518, 153777, 181378, 272067, 307554, 461331, 544134, 816201, 922662, 1178957, 1632402, 2357914, 3536871, 7073742, 10610613, 21221226]

約数ペア:

[(1, 21221226), (2, 10610613), (3, 7073742), (6, 3536871), (9, 2357914), (13, 1632402), (18, 1178957), (23, 922662), (26, 816201), (39, 544134), (46, 461331), (69, 307554), (78, 272067), (117, 181378), (138, 153777), (207, 102518), (234, 90689), (299, 70974), (414, 51259), (598, 35487), (897, 23658), (1794, 11829), (2691, 7886), (3943, 5382)]