28025109

素因数分解:

$3^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:356

約数の個数: 60

約数和(自身を含む): 50982624

約数和(自身を除く): 22957515

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 81, 147, 161, 189, 207, 307, 441, 483, 567, 621, 921, 1127, 1323, 1449, 1863, 2149, 2763, 3381, 3969, 4347, 6447, 7061, 8289, 10143, 13041, 15043, 19341, 21183, 24867, 30429, 45129, 49427, 58023, 63549, 91287, 135387, 148281, 174069, 190647, 345989, 406161, 444843, 571941, 1037967, 1218483, 1334529, 3113901, 4003587, 9341703, 28025109]

約数ペア:

[(1, 28025109), (3, 9341703), (7, 4003587), (9, 3113901), (21, 1334529), (23, 1218483), (27, 1037967), (49, 571941), (63, 444843), (69, 406161), (81, 345989), (147, 190647), (161, 174069), (189, 148281), (207, 135387), (307, 91287), (441, 63549), (483, 58023), (567, 49427), (621, 45129), (921, 30429), (1127, 24867), (1323, 21183), (1449, 19341), (1863, 15043), (2149, 13041), (2763, 10143), (3381, 8289), (3969, 7061), (4347, 6447)]