21441556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20471084

約数列:

[1, 2, 4, 17, 29, 34, 58, 68, 83, 116, 131, 166, 262, 332, 493, 524, 986, 1411, 1972, 2227, 2407, 2822, 3799, 4454, 4814, 5644, 7598, 8908, 9628, 10873, 15196, 21746, 40919, 43492, 64583, 81838, 129166, 163676, 184841, 258332, 315317, 369682, 630634, 739364, 1261268, 5360389, 10720778, 21441556]

約数ペア:

[(1, 21441556), (2, 10720778), (4, 5360389), (17, 1261268), (29, 739364), (34, 630634), (58, 369682), (68, 315317), (83, 258332), (116, 184841), (131, 163676), (166, 129166), (262, 81838), (332, 64583), (493, 43492), (524, 40919), (986, 21746), (1411, 15196), (1972, 10873), (2227, 9628), (2407, 8908), (2822, 7598), (3799, 5644), (4454, 4814)]