20615781

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 10177179

約数列:

[1, 3, 17, 29, 51, 53, 87, 159, 263, 493, 789, 901, 1479, 1537, 2703, 4471, 4611, 7627, 13413, 13939, 22881, 26129, 41817, 78387, 129659, 236963, 388977, 404231, 710889, 1212693, 6871927, 20615781]

約数ペア:

[(1, 20615781), (3, 6871927), (17, 1212693), (29, 710889), (51, 404231), (53, 388977), (87, 236963), (159, 129659), (263, 78387), (493, 41817), (789, 26129), (901, 22881), (1479, 13939), (1537, 13413), (2703, 7627), (4471, 4611)]