20917961

素因数分解:

${\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 16

約数和(自身を含む): 22464000

約数和(自身を除く): 1546039

約数列:

[1, 29, 47, 103, 149, 1363, 2987, 4321, 4841, 7003, 15347, 140389, 203087, 445063, 721309, 20917961]

約数ペア:

[(1, 20917961), (29, 721309), (47, 445063), (103, 203087), (149, 140389), (1363, 15347), (2987, 7003), (4321, 4841)]