21380172

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{161971}}^1$

素因数の和:161989

約数の個数: 24

約数和(自身を含む): 54422592

約数和(自身を除く): 33042420

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 161971, 323942, 485913, 647884, 971826, 1781681, 1943652, 3563362, 5345043, 7126724, 10690086, 21380172]

約数ペア:

[(1, 21380172), (2, 10690086), (3, 7126724), (4, 5345043), (6, 3563362), (11, 1943652), (12, 1781681), (22, 971826), (33, 647884), (44, 485913), (66, 323942), (132, 161971)]