21763791

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2903}}^1$

素因数の和:2940

約数の個数: 36

約数和(自身を含む): 38733552

約数和(自身を除く): 16969761

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2903, 7497, 8709, 20321, 26127, 49351, 60963, 142247, 148053, 182889, 345457, 426741, 444159, 1036371, 1280223, 2418199, 3109113, 7254597, 21763791]

約数ペア:

[(1, 21763791), (3, 7254597), (7, 3109113), (9, 2418199), (17, 1280223), (21, 1036371), (49, 444159), (51, 426741), (63, 345457), (119, 182889), (147, 148053), (153, 142247), (357, 60963), (441, 49351), (833, 26127), (1071, 20321), (2499, 8709), (2903, 7497)]