28401723

素因数分解:

$3^2\times 7^2\times {\mathrm{64403}}^1$

素因数の和:64423

約数の個数: 18

約数和(自身を含む): 47723364

約数和(自身を除く): 19321641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 64403, 193209, 450821, 579627, 1352463, 3155747, 4057389, 9467241, 28401723]

約数ペア:

[(1, 28401723), (3, 9467241), (7, 4057389), (9, 3155747), (21, 1352463), (49, 579627), (63, 450821), (147, 193209), (441, 64403)]