20894643

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2741}}^1$

素因数の和:2776

約数の個数: 36

約数和(自身を含む): 37927344

約数和(自身を除く): 17032701

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2741, 7623, 8223, 19187, 24669, 30151, 57561, 90453, 172683, 211057, 271359, 331661, 633171, 994983, 1899513, 2321627, 2984949, 6964881, 20894643]

約数ペア:

[(1, 20894643), (3, 6964881), (7, 2984949), (9, 2321627), (11, 1899513), (21, 994983), (33, 633171), (63, 331661), (77, 271359), (99, 211057), (121, 172683), (231, 90453), (363, 57561), (693, 30151), (847, 24669), (1089, 19187), (2541, 8223), (2741, 7623)]