21424905

素因数分解:

$3^4\times 5^1\times {\mathrm{52901}}^1$

素因数の和:52918

約数の個数: 20

約数和(自身を含む): 38406852

約数和(自身を除く): 16981947

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52901, 158703, 264505, 476109, 793515, 1428327, 2380545, 4284981, 7141635, 21424905]

約数ペア:

[(1, 21424905), (3, 7141635), (5, 4284981), (9, 2380545), (15, 1428327), (27, 793515), (45, 476109), (81, 264505), (135, 158703), (405, 52901)]