78315320

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4787}}^1$

素因数の和:5207

約数の個数: 32

約数和(自身を含む): 176677200

約数和(自身を除く): 98361880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 4787, 8180, 9574, 16360, 19148, 23935, 38296, 47870, 95740, 191480, 1957883, 3915766, 7831532, 9789415, 15663064, 19578830, 39157660, 78315320]

約数ペア:

[(1, 78315320), (2, 39157660), (4, 19578830), (5, 15663064), (8, 9789415), (10, 7831532), (20, 3915766), (40, 1957883), (409, 191480), (818, 95740), (1636, 47870), (2045, 38296), (3272, 23935), (4090, 19148), (4787, 16360), (8180, 9574)]