28639221

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 42900480

約数和(自身を除く): 14261259

約数列:

[1, 3, 13, 37, 39, 89, 111, 223, 267, 481, 669, 1157, 1443, 2899, 3293, 3471, 8251, 8697, 9879, 19847, 24753, 42809, 59541, 107263, 128427, 258011, 321789, 734339, 774033, 2203017, 9546407, 28639221]

約数ペア:

[(1, 28639221), (3, 9546407), (13, 2203017), (37, 774033), (39, 734339), (89, 321789), (111, 258011), (223, 128427), (267, 107263), (481, 59541), (669, 42809), (1157, 24753), (1443, 19847), (2899, 9879), (3293, 8697), (3471, 8251)]