21732789

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 33241600

約数和(自身を除く): 11508811

約数列:

[1, 3, 13, 19, 39, 57, 139, 211, 247, 417, 633, 741, 1807, 2641, 2743, 4009, 5421, 7923, 8229, 12027, 29329, 34333, 52117, 87987, 102999, 156351, 381277, 557251, 1143831, 1671753, 7244263, 21732789]

約数ペア:

[(1, 21732789), (3, 7244263), (13, 1671753), (19, 1143831), (39, 557251), (57, 381277), (139, 156351), (211, 102999), (247, 87987), (417, 52117), (633, 34333), (741, 29329), (1807, 12027), (2641, 8229), (2743, 7923), (4009, 5421)]