20872761

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{757}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 34637568

約数和(自身を除く): 13764807

約数列:

[1, 3, 7, 13, 21, 39, 91, 101, 273, 303, 707, 757, 1313, 2121, 2271, 3939, 5299, 9191, 9841, 15897, 27573, 29523, 68887, 76457, 206661, 229371, 535199, 993941, 1605597, 2981823, 6957587, 20872761]

約数ペア:

[(1, 20872761), (3, 6957587), (7, 2981823), (13, 1605597), (21, 993941), (39, 535199), (91, 229371), (101, 206661), (273, 76457), (303, 68887), (707, 29523), (757, 27573), (1313, 15897), (2121, 9841), (2271, 9191), (3939, 5299)]