208720449

素因数分解:

$3^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2099

約数の個数: 48

約数和(自身を含む): 364435200

約数和(自身を除く): 155714751

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 79, 147, 189, 237, 441, 553, 711, 1323, 1659, 1997, 2133, 3871, 4977, 5991, 11613, 13979, 14931, 17973, 34839, 41937, 53919, 97853, 104517, 125811, 157763, 293559, 377433, 473289, 880677, 1104341, 1419867, 2642031, 3313023, 4259601, 7730387, 9939069, 23191161, 29817207, 69573483, 208720449]

約数ペア:

[(1, 208720449), (3, 69573483), (7, 29817207), (9, 23191161), (21, 9939069), (27, 7730387), (49, 4259601), (63, 3313023), (79, 2642031), (147, 1419867), (189, 1104341), (237, 880677), (441, 473289), (553, 377433), (711, 293559), (1323, 157763), (1659, 125811), (1997, 104517), (2133, 97853), (3871, 53919), (4977, 41937), (5991, 34839), (11613, 17973), (13979, 14931)]