21200535

素因数分解:

$3^5\times 5^1\times {\mathrm{17449}}^1$

素因数の和:17469

約数の個数: 24

約数和(自身を含む): 38110800

約数和(自身を除く): 16910265

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17449, 52347, 87245, 157041, 261735, 471123, 785205, 1413369, 2355615, 4240107, 7066845, 21200535]

約数ペア:

[(1, 21200535), (3, 7066845), (5, 4240107), (9, 2355615), (15, 1413369), (27, 785205), (45, 471123), (81, 261735), (135, 157041), (243, 87245), (405, 52347), (1215, 17449)]