390331389

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1\times {\mathrm{727}}^1$

素因数の和:1465

約数の個数: 32

約数和(自身を含む): 612591616

約数和(自身を除く): 222260227

約数列:

[1, 3, 7, 21, 37, 111, 259, 691, 727, 777, 2073, 2181, 4837, 5089, 14511, 15267, 25567, 26899, 76701, 80697, 178969, 188293, 502357, 536907, 564879, 1507071, 3516499, 10549497, 18587209, 55761627, 130110463, 390331389]

約数ペア:

[(1, 390331389), (3, 130110463), (7, 55761627), (21, 18587209), (37, 10549497), (111, 3516499), (259, 1507071), (691, 564879), (727, 536907), (777, 502357), (2073, 188293), (2181, 178969), (4837, 80697), (5089, 76701), (14511, 26899), (15267, 25567)]