81291147

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{19069}}^1$

素因数の和:19115

約数の個数: 24

約数和(自身を含む): 130438800

約数和(自身を除く): 49147653

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 19069, 57207, 133483, 400449, 553001, 934381, 1659003, 2803143, 3871007, 11613021, 27097049, 81291147]

約数ペア:

[(1, 81291147), (3, 27097049), (7, 11613021), (21, 3871007), (29, 2803143), (49, 1659003), (87, 934381), (147, 553001), (203, 400449), (609, 133483), (1421, 57207), (4263, 19069)]