20770641

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 11888559

約数列:

[1, 3, 9, 27, 29, 41, 87, 123, 261, 369, 647, 783, 1107, 1189, 1941, 3567, 5823, 10701, 17469, 18763, 26527, 32103, 56289, 79581, 168867, 238743, 506601, 716229, 769283, 2307849, 6923547, 20770641]

約数ペア:

[(1, 20770641), (3, 6923547), (9, 2307849), (27, 769283), (29, 716229), (41, 506601), (87, 238743), (123, 168867), (261, 79581), (369, 56289), (647, 32103), (783, 26527), (1107, 18763), (1189, 17469), (1941, 10701), (3567, 5823)]