21285565

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 30746880

約数和(自身を除く): 9461315

約数列:

[1, 5, 7, 29, 35, 67, 145, 203, 313, 335, 469, 1015, 1565, 1943, 2191, 2345, 9077, 9715, 10955, 13601, 20971, 45385, 63539, 68005, 104855, 146797, 317695, 608159, 733985, 3040795, 4257113, 21285565]

約数ペア:

[(1, 21285565), (5, 4257113), (7, 3040795), (29, 733985), (35, 608159), (67, 317695), (145, 146797), (203, 104855), (313, 68005), (335, 63539), (469, 45385), (1015, 20971), (1565, 13601), (1943, 10955), (2191, 9715), (2345, 9077)]