21401688

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:377

約数の個数: 128

約数和(自身を含む): 68728320

約数和(自身を除く): 47326632

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 37, 42, 44, 56, 66, 74, 77, 84, 88, 111, 132, 148, 154, 168, 222, 231, 259, 264, 296, 308, 313, 407, 444, 462, 518, 616, 626, 777, 814, 888, 924, 939, 1036, 1221, 1252, 1554, 1628, 1848, 1878, 2072, 2191, 2442, 2504, 2849, 3108, 3256, 3443, 3756, 4382, 4884, 5698, 6216, 6573, 6886, 7512, 8547, 8764, 9768, 10329, 11396, 11581, 13146, 13772, 17094, 17528, 20658, 22792, 23162, 24101, 26292, 27544, 34188, 34743, 41316, 46324, 48202, 52584, 68376, 69486, 72303, 81067, 82632, 92648, 96404, 127391, 138972, 144606, 162134, 192808, 243201, 254782, 277944, 289212, 324268, 382173, 486402, 509564, 578424, 648536, 764346, 891737, 972804, 1019128, 1528692, 1783474, 1945608, 2675211, 3057384, 3566948, 5350422, 7133896, 10700844, 21401688]

約数ペア:

[(1, 21401688), (2, 10700844), (3, 7133896), (4, 5350422), (6, 3566948), (7, 3057384), (8, 2675211), (11, 1945608), (12, 1783474), (14, 1528692), (21, 1019128), (22, 972804), (24, 891737), (28, 764346), (33, 648536), (37, 578424), (42, 509564), (44, 486402), (56, 382173), (66, 324268), (74, 289212), (77, 277944), (84, 254782), (88, 243201), (111, 192808), (132, 162134), (148, 144606), (154, 138972), (168, 127391), (222, 96404), (231, 92648), (259, 82632), (264, 81067), (296, 72303), (308, 69486), (313, 68376), (407, 52584), (444, 48202), (462, 46324), (518, 41316), (616, 34743), (626, 34188), (777, 27544), (814, 26292), (888, 24101), (924, 23162), (939, 22792), (1036, 20658), (1221, 17528), (1252, 17094), (1554, 13772), (1628, 13146), (1848, 11581), (1878, 11396), (2072, 10329), (2191, 9768), (2442, 8764), (2504, 8547), (2849, 7512), (3108, 6886), (3256, 6573), (3443, 6216), (3756, 5698), (4382, 4884)]