28725921

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1747}}^1$

素因数の和:1795

約数の個数: 40

約数和(自身を含む): 50761920

約数和(自身を除く): 22035999

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1747, 1827, 2349, 5241, 5481, 12229, 15723, 16443, 36687, 47169, 50663, 110061, 141507, 151989, 330183, 354641, 455967, 990549, 1063923, 1367901, 3191769, 4103703, 9575307, 28725921]

約数ペア:

[(1, 28725921), (3, 9575307), (7, 4103703), (9, 3191769), (21, 1367901), (27, 1063923), (29, 990549), (63, 455967), (81, 354641), (87, 330183), (189, 151989), (203, 141507), (261, 110061), (567, 50663), (609, 47169), (783, 36687), (1747, 16443), (1827, 15723), (2349, 12229), (5241, 5481)]