207920505

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{2659}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 359291520

約数和(自身を除く): 151371015

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 401, 1203, 2005, 2659, 5213, 6015, 7977, 13295, 15639, 26065, 34567, 39885, 78195, 103701, 172835, 518505, 1066259, 3198777, 5331295, 13861367, 15993885, 41584101, 69306835, 207920505]

約数ペア:

[(1, 207920505), (3, 69306835), (5, 41584101), (13, 15993885), (15, 13861367), (39, 5331295), (65, 3198777), (195, 1066259), (401, 518505), (1203, 172835), (2005, 103701), (2659, 78195), (5213, 39885), (6015, 34567), (7977, 26065), (13295, 15639)]