291222729

素因数分解:

$3^3\times 7^2\times {\mathrm{220123}}^1$

素因数の和:220146

約数の個数: 24

約数和(自身を含む): 501882720

約数和(自身を除く): 210659991

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 220123, 660369, 1540861, 1981107, 4622583, 5943321, 10786027, 13867749, 32358081, 41603247, 97074243, 291222729]

約数ペア:

[(1, 291222729), (3, 97074243), (7, 41603247), (9, 32358081), (21, 13867749), (27, 10786027), (49, 5943321), (63, 4622583), (147, 1981107), (189, 1540861), (441, 660369), (1323, 220123)]