20490039

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{271}}^2$

素因数の和:579

約数の個数: 18

約数和(自身を含む): 30664608

約数和(自身を除く): 10174569

約数列:

[1, 3, 9, 31, 93, 271, 279, 813, 2439, 8401, 25203, 73441, 75609, 220323, 660969, 2276671, 6830013, 20490039]

約数ペア:

[(1, 20490039), (3, 6830013), (9, 2276671), (31, 660969), (93, 220323), (271, 75609), (279, 73441), (813, 25203), (2439, 8401)]