17940447

素因数分解:

$3^5\times 7^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 13509153

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 199, 243, 371, 477, 567, 597, 1113, 1393, 1431, 1701, 1791, 3339, 4179, 4293, 5373, 10017, 10547, 12537, 12879, 16119, 30051, 31641, 37611, 48357, 73829, 90153, 94923, 112833, 221487, 284769, 338499, 664461, 854307, 1993383, 2562921, 5980149, 17940447]

約数ペア:

[(1, 17940447), (3, 5980149), (7, 2562921), (9, 1993383), (21, 854307), (27, 664461), (53, 338499), (63, 284769), (81, 221487), (159, 112833), (189, 94923), (199, 90153), (243, 73829), (371, 48357), (477, 37611), (567, 31641), (597, 30051), (1113, 16119), (1393, 12879), (1431, 12537), (1701, 10547), (1791, 10017), (3339, 5373), (4179, 4293)]