21989079

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{8513}}^1$

素因数の和:8567

約数の個数: 24

約数和(自身を含む): 37189152

約数和(自身を除く): 15200073

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 8513, 25539, 59591, 76617, 178773, 349033, 536319, 1047099, 2443231, 3141297, 7329693, 21989079]

約数ペア:

[(1, 21989079), (3, 7329693), (7, 3141297), (9, 2443231), (21, 1047099), (41, 536319), (63, 349033), (123, 178773), (287, 76617), (369, 59591), (861, 25539), (2583, 8513)]