21758828

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{113}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 49424928

約数和(自身を除く): 27666100

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 52, 91, 92, 113, 161, 182, 226, 299, 322, 364, 452, 529, 598, 644, 791, 1058, 1196, 1469, 1582, 2093, 2116, 2599, 2938, 3164, 3703, 4186, 5198, 5876, 6877, 7406, 8372, 10283, 10396, 13754, 14812, 18193, 20566, 27508, 33787, 36386, 41132, 48139, 59777, 67574, 72772, 96278, 119554, 135148, 192556, 236509, 239108, 418439, 473018, 777101, 836878, 946036, 1554202, 1673756, 3108404, 5439707, 10879414, 21758828]

約数ペア:

[(1, 21758828), (2, 10879414), (4, 5439707), (7, 3108404), (13, 1673756), (14, 1554202), (23, 946036), (26, 836878), (28, 777101), (46, 473018), (52, 418439), (91, 239108), (92, 236509), (113, 192556), (161, 135148), (182, 119554), (226, 96278), (299, 72772), (322, 67574), (364, 59777), (452, 48139), (529, 41132), (598, 36386), (644, 33787), (791, 27508), (1058, 20566), (1196, 18193), (1469, 14812), (1582, 13754), (2093, 10396), (2116, 10283), (2599, 8372), (2938, 7406), (3164, 6877), (3703, 5876), (4186, 5198)]