20955627

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2749}}^1$

素因数の和:2784

約数の個数: 36

約数和(自身を含む): 38038000

約数和(自身を除く): 17082373

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2749, 7623, 8247, 19243, 24741, 30239, 57729, 90717, 173187, 211673, 272151, 332629, 635019, 997887, 1905057, 2328403, 2993661, 6985209, 20955627]

約数ペア:

[(1, 20955627), (3, 6985209), (7, 2993661), (9, 2328403), (11, 1905057), (21, 997887), (33, 635019), (63, 332629), (77, 272151), (99, 211673), (121, 173187), (231, 90717), (363, 57729), (693, 30239), (847, 24741), (1089, 19243), (2541, 8247), (2749, 7623)]