21236418

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:389

約数の個数: 80

約数和(自身を含む): 55454784

約数和(自身を除く): 34218366

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 61, 63, 81, 122, 126, 162, 183, 189, 307, 366, 378, 427, 549, 567, 614, 854, 921, 1098, 1134, 1281, 1647, 1842, 2149, 2562, 2763, 3294, 3843, 4298, 4941, 5526, 6447, 7686, 8289, 9882, 11529, 12894, 16578, 18727, 19341, 23058, 24867, 34587, 37454, 38682, 49734, 56181, 58023, 69174, 112362, 116046, 131089, 168543, 174069, 262178, 337086, 348138, 393267, 505629, 786534, 1011258, 1179801, 1516887, 2359602, 3033774, 3539403, 7078806, 10618209, 21236418]

約数ペア:

[(1, 21236418), (2, 10618209), (3, 7078806), (6, 3539403), (7, 3033774), (9, 2359602), (14, 1516887), (18, 1179801), (21, 1011258), (27, 786534), (42, 505629), (54, 393267), (61, 348138), (63, 337086), (81, 262178), (122, 174069), (126, 168543), (162, 131089), (183, 116046), (189, 112362), (307, 69174), (366, 58023), (378, 56181), (427, 49734), (549, 38682), (567, 37454), (614, 34587), (854, 24867), (921, 23058), (1098, 19341), (1134, 18727), (1281, 16578), (1647, 12894), (1842, 11529), (2149, 9882), (2562, 8289), (2763, 7686), (3294, 6447), (3843, 5526), (4298, 4941)]