20913399

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4831}}^1$

素因数の和:4887

約数の個数: 24

約数和(自身を含む): 33418112

約数和(自身を除く): 12504713

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 481, 1443, 4329, 4831, 14493, 43479, 62803, 178747, 188409, 536241, 565227, 1608723, 2323711, 6971133, 20913399]

約数ペア:

[(1, 20913399), (3, 6971133), (9, 2323711), (13, 1608723), (37, 565227), (39, 536241), (111, 188409), (117, 178747), (333, 62803), (481, 43479), (1443, 14493), (4329, 4831)]