28380357

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 17483643

約数列:

[1, 3, 9, 19, 29, 57, 59, 87, 97, 171, 177, 261, 291, 531, 551, 873, 1121, 1653, 1711, 1843, 2813, 3363, 4959, 5133, 5529, 5723, 8439, 10089, 15399, 16587, 17169, 25317, 32509, 51507, 53447, 97527, 108737, 160341, 165967, 292581, 326211, 481023, 497901, 978633, 1493703, 3153373, 9460119, 28380357]

約数ペア:

[(1, 28380357), (3, 9460119), (9, 3153373), (19, 1493703), (29, 978633), (57, 497901), (59, 481023), (87, 326211), (97, 292581), (171, 165967), (177, 160341), (261, 108737), (291, 97527), (531, 53447), (551, 51507), (873, 32509), (1121, 25317), (1653, 17169), (1711, 16587), (1843, 15399), (2813, 10089), (3363, 8439), (4959, 5723), (5133, 5529)]