21354531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 32313600

約数和(自身を除く): 10959069

約数列:

[1, 3, 11, 33, 43, 101, 129, 149, 303, 447, 473, 1111, 1419, 1639, 3333, 4343, 4917, 6407, 13029, 15049, 19221, 45147, 47773, 70477, 143319, 165539, 211431, 496617, 647107, 1941321, 7118177, 21354531]

約数ペア:

[(1, 21354531), (3, 7118177), (11, 1941321), (33, 647107), (43, 496617), (101, 211431), (129, 165539), (149, 143319), (303, 70477), (447, 47773), (473, 45147), (1111, 19221), (1419, 15049), (1639, 13029), (3333, 6407), (4343, 4917)]