20121171

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 32563200

約数和(自身を除く): 12442029

約数列:

[1, 3, 7, 19, 21, 57, 133, 211, 239, 399, 633, 717, 1477, 1673, 4009, 4431, 4541, 5019, 12027, 13623, 28063, 31787, 50429, 84189, 95361, 151287, 353003, 958151, 1059009, 2874453, 6707057, 20121171]

約数ペア:

[(1, 20121171), (3, 6707057), (7, 2874453), (19, 1059009), (21, 958151), (57, 353003), (133, 151287), (211, 95361), (239, 84189), (399, 50429), (633, 31787), (717, 28063), (1477, 13623), (1673, 12027), (4009, 5019), (4431, 4541)]