20775069

素因数分解:

$3^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 15996771

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 123, 147, 189, 287, 369, 383, 441, 861, 1107, 1149, 1323, 2009, 2583, 2681, 3447, 6027, 7749, 8043, 10341, 15703, 18081, 18767, 24129, 47109, 54243, 56301, 72387, 109921, 141327, 168903, 329763, 423981, 506709, 769447, 989289, 2308341, 2967867, 6925023, 20775069]

約数ペア:

[(1, 20775069), (3, 6925023), (7, 2967867), (9, 2308341), (21, 989289), (27, 769447), (41, 506709), (49, 423981), (63, 329763), (123, 168903), (147, 141327), (189, 109921), (287, 72387), (369, 56301), (383, 54243), (441, 47109), (861, 24129), (1107, 18767), (1149, 18081), (1323, 15703), (2009, 10341), (2583, 8043), (2681, 7749), (3447, 6027)]