78205720

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{1741}}^1$

素因数の和:2875

約数の個数: 32

約数和(自身を含む): 176220720

約数和(自身を除く): 98015000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 1741, 2246, 3482, 4492, 5615, 6964, 8705, 8984, 11230, 13928, 17410, 22460, 34820, 44920, 69640, 1955143, 3910286, 7820572, 9775715, 15641144, 19551430, 39102860, 78205720]

約数ペア:

[(1, 78205720), (2, 39102860), (4, 19551430), (5, 15641144), (8, 9775715), (10, 7820572), (20, 3910286), (40, 1955143), (1123, 69640), (1741, 44920), (2246, 34820), (3482, 22460), (4492, 17410), (5615, 13928), (6964, 11230), (8705, 8984)]