20976399

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{509}}^1$

素因数の和:775

約数の個数: 24

約数和(自身を含む): 32089200

約数和(自身を除く): 11112801

約数列:

[1, 3, 9, 19, 57, 171, 241, 509, 723, 1527, 2169, 4579, 4581, 9671, 13737, 29013, 41211, 87039, 122669, 368007, 1104021, 2330711, 6992133, 20976399]

約数ペア:

[(1, 20976399), (3, 6992133), (9, 2330711), (19, 1104021), (57, 368007), (171, 122669), (241, 87039), (509, 41211), (723, 29013), (1527, 13737), (2169, 9671), (4579, 4581)]