21857724

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{12391}}^1$

素因数の和:12415

約数の個数: 54

約数和(自身を含む): 64277304

約数和(自身を除く): 42419580

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 441, 588, 882, 1764, 12391, 24782, 37173, 49564, 74346, 86737, 111519, 148692, 173474, 223038, 260211, 346948, 446076, 520422, 607159, 780633, 1040844, 1214318, 1561266, 1821477, 2428636, 3122532, 3642954, 5464431, 7285908, 10928862, 21857724]

約数ペア:

[(1, 21857724), (2, 10928862), (3, 7285908), (4, 5464431), (6, 3642954), (7, 3122532), (9, 2428636), (12, 1821477), (14, 1561266), (18, 1214318), (21, 1040844), (28, 780633), (36, 607159), (42, 520422), (49, 446076), (63, 346948), (84, 260211), (98, 223038), (126, 173474), (147, 148692), (196, 111519), (252, 86737), (294, 74346), (441, 49564), (588, 37173), (882, 24782), (1764, 12391)]