20872371

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 31288320

約数和(自身を除く): 10415949

約数列:

[1, 3, 13, 39, 47, 59, 141, 177, 193, 579, 611, 767, 1833, 2301, 2509, 2773, 7527, 8319, 9071, 11387, 27213, 34161, 36049, 108147, 117923, 148031, 353769, 444093, 535189, 1605567, 6957457, 20872371]

約数ペア:

[(1, 20872371), (3, 6957457), (13, 1605567), (39, 535189), (47, 444093), (59, 353769), (141, 148031), (177, 117923), (193, 108147), (579, 36049), (611, 34161), (767, 27213), (1833, 11387), (2301, 9071), (2509, 8319), (2773, 7527)]