21228655

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{26371}}^1$

素因数の和:26406

約数の個数: 16

約数和(自身を含む): 30380544

約数和(自身を除く): 9151889

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 26371, 131855, 184597, 606533, 922985, 3032665, 4245731, 21228655]

約数ペア:

[(1, 21228655), (5, 4245731), (7, 3032665), (23, 922985), (35, 606533), (115, 184597), (161, 131855), (805, 26371)]