21529719

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2029}}^1$

素因数の和:2172

約数の個数: 20

約数和(自身を含む): 32423160

約数和(自身を除く): 10893441

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2029, 3537, 6087, 10611, 18261, 54783, 164349, 265799, 797397, 2392191, 7176573, 21529719]

約数ペア:

[(1, 21529719), (3, 7176573), (9, 2392191), (27, 797397), (81, 265799), (131, 164349), (393, 54783), (1179, 18261), (2029, 10611), (3537, 6087)]