21225273

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1201}}^1$

素因数の和:1384

約数の個数: 16

約数和(自身を含む): 29194176

約数和(自身を除く): 7968903

約数列:

[1, 3, 43, 129, 137, 411, 1201, 3603, 5891, 17673, 51643, 154929, 164537, 493611, 7075091, 21225273]

約数ペア:

[(1, 21225273), (3, 7075091), (43, 493611), (129, 164537), (137, 154929), (411, 51643), (1201, 17673), (3603, 5891)]