21546891

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8581}}^1$

素因数の和:8624

約数の個数: 20

約数和(自身を含む): 33229504

約数和(自身を除く): 11682613

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8581, 25743, 77229, 231687, 266011, 695061, 798033, 2394099, 7182297, 21546891]

約数ペア:

[(1, 21546891), (3, 7182297), (9, 2394099), (27, 798033), (31, 695061), (81, 266011), (93, 231687), (279, 77229), (837, 25743), (2511, 8581)]