865389

素因数分解:

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

素因数の和:82

約数の個数: 24

約数和(自身を含む): 1393600

約数和(自身を除く): 528211

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 343, 609, 841, 1029, 1421, 2523, 4263, 5887, 9947, 17661, 29841, 41209, 123627, 288463, 865389]

約数ペア:

[(1, 865389), (3, 288463), (7, 123627), (21, 41209), (29, 29841), (49, 17661), (87, 9947), (147, 5887), (203, 4263), (343, 2523), (609, 1421), (841, 1029)]