215913481

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{547}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 272719872

約数和(自身を除く): 56806391

約数列:

[1, 7, 17, 31, 107, 119, 217, 527, 547, 749, 1819, 3317, 3689, 3829, 9299, 12733, 16957, 23219, 56389, 58529, 65093, 118699, 288269, 394723, 409703, 994993, 1814399, 2017883, 6964951, 12700793, 30844783, 215913481]

約数ペア:

[(1, 215913481), (7, 30844783), (17, 12700793), (31, 6964951), (107, 2017883), (119, 1814399), (217, 994993), (527, 409703), (547, 394723), (749, 288269), (1819, 118699), (3317, 65093), (3689, 58529), (3829, 56389), (9299, 23219), (12733, 16957)]