201920991

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{11261}}^1$

素因数の和:11446

約数の個数: 16

約数和(自身を含む): 277495680

約数和(自身を除く): 75574689

約数列:

[1, 3, 43, 129, 139, 417, 5977, 11261, 17931, 33783, 484223, 1452669, 1565279, 4695837, 67306997, 201920991]

約数ペア:

[(1, 201920991), (3, 67306997), (43, 4695837), (129, 1565279), (139, 1452669), (417, 484223), (5977, 33783), (11261, 17931)]