289355275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{701}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 417830400

約数和(自身を除く): 128475125

約数列:

[1, 5, 11, 19, 25, 55, 79, 95, 209, 275, 395, 475, 701, 869, 1045, 1501, 1975, 3505, 4345, 5225, 7505, 7711, 13319, 16511, 17525, 21725, 37525, 38555, 55379, 66595, 82555, 146509, 192775, 276895, 332975, 412775, 609169, 732545, 1052201, 1384475, 3045845, 3662725, 5261005, 11574211, 15229225, 26305025, 57871055, 289355275]

約数ペア:

[(1, 289355275), (5, 57871055), (11, 26305025), (19, 15229225), (25, 11574211), (55, 5261005), (79, 3662725), (95, 3045845), (209, 1384475), (275, 1052201), (395, 732545), (475, 609169), (701, 412775), (869, 332975), (1045, 276895), (1501, 192775), (1975, 146509), (3505, 82555), (4345, 66595), (5225, 55379), (7505, 38555), (7711, 37525), (13319, 21725), (16511, 17525)]