81460880

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6247}}^1$

素因数の和:6423

約数の個数: 40

約数和(自身を含む): 190588992

約数和(自身を除く): 109128112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6247, 6520, 12494, 13040, 24988, 31235, 49976, 62470, 99952, 124940, 249880, 499760, 1018261, 2036522, 4073044, 5091305, 8146088, 10182610, 16292176, 20365220, 40730440, 81460880]

約数ペア:

[(1, 81460880), (2, 40730440), (4, 20365220), (5, 16292176), (8, 10182610), (10, 8146088), (16, 5091305), (20, 4073044), (40, 2036522), (80, 1018261), (163, 499760), (326, 249880), (652, 124940), (815, 99952), (1304, 62470), (1630, 49976), (2608, 31235), (3260, 24988), (6247, 13040), (6520, 12494)]