21088340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11587}}^1$

素因数の和:11616

約数の個数: 48

約数和(自身を含む): 54509952

約数和(自身を除く): 33421612

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11587, 23174, 46348, 57935, 81109, 115870, 150631, 162218, 231740, 301262, 324436, 405545, 602524, 753155, 811090, 1054417, 1506310, 1622180, 2108834, 3012620, 4217668, 5272085, 10544170, 21088340]

約数ペア:

[(1, 21088340), (2, 10544170), (4, 5272085), (5, 4217668), (7, 3012620), (10, 2108834), (13, 1622180), (14, 1506310), (20, 1054417), (26, 811090), (28, 753155), (35, 602524), (52, 405545), (65, 324436), (70, 301262), (91, 231740), (130, 162218), (140, 150631), (182, 115870), (260, 81109), (364, 57935), (455, 46348), (910, 23174), (1820, 11587)]