64811960

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{11827}}^1$

素因数の和:11975

約数の個数: 32

約数和(自身を含む): 146903760

約数和(自身を除く): 82091800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 11827, 23654, 47308, 59135, 94616, 118270, 236540, 473080, 1620299, 3240598, 6481196, 8101495, 12962392, 16202990, 32405980, 64811960]

約数ペア:

[(1, 64811960), (2, 32405980), (4, 16202990), (5, 12962392), (8, 8101495), (10, 6481196), (20, 3240598), (40, 1620299), (137, 473080), (274, 236540), (548, 118270), (685, 94616), (1096, 59135), (1370, 47308), (2740, 23654), (5480, 11827)]