21532251

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 33481728

約数和(自身を除く): 11949477

約数列:

[1, 3, 13, 17, 39, 47, 51, 141, 221, 611, 663, 691, 799, 1833, 2073, 2397, 8983, 10387, 11747, 26949, 31161, 32477, 35241, 97431, 152711, 422201, 458133, 552109, 1266603, 1656327, 7177417, 21532251]

約数ペア:

[(1, 21532251), (3, 7177417), (13, 1656327), (17, 1266603), (39, 552109), (47, 458133), (51, 422201), (141, 152711), (221, 97431), (611, 35241), (663, 32477), (691, 31161), (799, 26949), (1833, 11747), (2073, 10387), (2397, 8983)]