81975736

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{397}}^1\times {\mathrm{487}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 157321440

約数和(自身を除く): 75345704

約数列:

[1, 2, 4, 8, 53, 106, 212, 397, 424, 487, 794, 974, 1588, 1948, 3176, 3896, 21041, 25811, 42082, 51622, 84164, 103244, 168328, 193339, 206488, 386678, 773356, 1546712, 10246967, 20493934, 40987868, 81975736]

約数ペア:

[(1, 81975736), (2, 40987868), (4, 20493934), (8, 10246967), (53, 1546712), (106, 773356), (212, 386678), (397, 206488), (424, 193339), (487, 168328), (794, 103244), (974, 84164), (1588, 51622), (1948, 42082), (3176, 25811), (3896, 21041)]