21132561

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9971439

約数列:

[1, 3, 23, 29, 59, 69, 87, 177, 179, 537, 667, 1357, 1711, 2001, 4071, 4117, 5133, 5191, 10561, 12351, 15573, 31683, 39353, 118059, 119393, 242903, 306269, 358179, 728709, 918807, 7044187, 21132561]

約数ペア:

[(1, 21132561), (3, 7044187), (23, 918807), (29, 728709), (59, 358179), (69, 306269), (87, 242903), (177, 119393), (179, 118059), (537, 39353), (667, 31683), (1357, 15573), (1711, 12351), (2001, 10561), (4071, 5191), (4117, 5133)]