72605680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{409}}^1$

素因数の和:746

約数の個数: 80

約数和(自身を含む): 194005440

約数和(自身を除く): 121399760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 317, 409, 560, 634, 818, 1268, 1585, 1636, 2045, 2219, 2536, 2863, 3170, 3272, 4090, 4438, 5072, 5726, 6340, 6544, 8180, 8876, 11095, 11452, 12680, 14315, 16360, 17752, 22190, 22904, 25360, 28630, 32720, 35504, 44380, 45808, 57260, 88760, 114520, 129653, 177520, 229040, 259306, 518612, 648265, 907571, 1037224, 1296530, 1815142, 2074448, 2593060, 3630284, 4537855, 5186120, 7260568, 9075710, 10372240, 14521136, 18151420, 36302840, 72605680]

約数ペア:

[(1, 72605680), (2, 36302840), (4, 18151420), (5, 14521136), (7, 10372240), (8, 9075710), (10, 7260568), (14, 5186120), (16, 4537855), (20, 3630284), (28, 2593060), (35, 2074448), (40, 1815142), (56, 1296530), (70, 1037224), (80, 907571), (112, 648265), (140, 518612), (280, 259306), (317, 229040), (409, 177520), (560, 129653), (634, 114520), (818, 88760), (1268, 57260), (1585, 45808), (1636, 44380), (2045, 35504), (2219, 32720), (2536, 28630), (2863, 25360), (3170, 22904), (3272, 22190), (4090, 17752), (4438, 16360), (5072, 14315), (5726, 12680), (6340, 11452), (6544, 11095), (8180, 8876)]