21829905

素因数分解:

$3^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:189

約数の個数: 56

約数和(自身を含む): 40371048

約数和(自身を除く): 18541143

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 113, 135, 159, 243, 265, 339, 405, 477, 565, 729, 795, 1017, 1215, 1431, 1695, 2385, 3051, 3645, 4293, 5085, 5989, 7155, 9153, 12879, 15255, 17967, 21465, 27459, 29945, 38637, 45765, 53901, 64395, 82377, 89835, 137295, 161703, 193185, 269505, 411885, 485109, 808515, 1455327, 2425545, 4365981, 7276635, 21829905]

約数ペア:

[(1, 21829905), (3, 7276635), (5, 4365981), (9, 2425545), (15, 1455327), (27, 808515), (45, 485109), (53, 411885), (81, 269505), (113, 193185), (135, 161703), (159, 137295), (243, 89835), (265, 82377), (339, 64395), (405, 53901), (477, 45765), (565, 38637), (729, 29945), (795, 27459), (1017, 21465), (1215, 17967), (1431, 15255), (1695, 12879), (2385, 9153), (3051, 7155), (3645, 5989), (4293, 5085)]