21354991

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{1783}}^1$

素因数の和:1878

約数の個数: 16

約数和(自身を含む): 25689600

約数和(自身を除く): 4334609

約数列:

[1, 7, 29, 59, 203, 413, 1711, 1783, 11977, 12481, 51707, 105197, 361949, 736379, 3050713, 21354991]

約数ペア:

[(1, 21354991), (7, 3050713), (29, 736379), (59, 361949), (203, 105197), (413, 51707), (1711, 12481), (1783, 11977)]