21157821

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{21179}}^1$

素因数の和:21225

約数の個数: 16

約数和(自身を含む): 32193600

約数和(自身を除く): 11035779

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 21179, 63537, 190611, 571833, 783623, 2350869, 7052607, 21157821]

約数ペア:

[(1, 21157821), (3, 7052607), (9, 2350869), (27, 783623), (37, 571833), (111, 190611), (333, 63537), (999, 21179)]