257690590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{3517}}^1$

素因数の和:3972

約数の個数: 32

約数和(自身を含む): 492407424

約数和(自身を除く): 234716834

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 431, 862, 2155, 3517, 4310, 7034, 7327, 14654, 17585, 35170, 36635, 59789, 73270, 119578, 298945, 597890, 1515827, 3031654, 7579135, 15158270, 25769059, 51538118, 128845295, 257690590]

約数ペア:

[(1, 257690590), (2, 128845295), (5, 51538118), (10, 25769059), (17, 15158270), (34, 7579135), (85, 3031654), (170, 1515827), (431, 597890), (862, 298945), (2155, 119578), (3517, 73270), (4310, 59789), (7034, 36635), (7327, 35170), (14654, 17585)]