20184957

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 33642840

約数和(自身を除く): 13457883

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 661, 783, 1053, 1131, 1983, 2349, 3393, 5949, 8593, 10179, 17847, 19169, 25779, 30537, 53541, 57507, 77337, 172521, 232011, 249197, 517563, 696033, 747591, 1552689, 2242773, 6728319, 20184957]

約数ペア:

[(1, 20184957), (3, 6728319), (9, 2242773), (13, 1552689), (27, 747591), (29, 696033), (39, 517563), (81, 249197), (87, 232011), (117, 172521), (261, 77337), (351, 57507), (377, 53541), (661, 30537), (783, 25779), (1053, 19169), (1131, 17847), (1983, 10179), (2349, 8593), (3393, 5949)]