81665880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1579}}^1$

素因数の和:2024

約数の個数: 64

約数和(自身を含む): 245721600

約数和(自身を除く): 164055720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 431, 862, 1293, 1579, 1724, 2155, 2586, 3158, 3448, 4310, 4737, 5172, 6316, 6465, 7895, 8620, 9474, 10344, 12632, 12930, 15790, 17240, 18948, 23685, 25860, 31580, 37896, 47370, 51720, 63160, 94740, 189480, 680549, 1361098, 2041647, 2722196, 3402745, 4083294, 5444392, 6805490, 8166588, 10208235, 13610980, 16333176, 20416470, 27221960, 40832940, 81665880]

約数ペア:

[(1, 81665880), (2, 40832940), (3, 27221960), (4, 20416470), (5, 16333176), (6, 13610980), (8, 10208235), (10, 8166588), (12, 6805490), (15, 5444392), (20, 4083294), (24, 3402745), (30, 2722196), (40, 2041647), (60, 1361098), (120, 680549), (431, 189480), (862, 94740), (1293, 63160), (1579, 51720), (1724, 47370), (2155, 37896), (2586, 31580), (3158, 25860), (3448, 23685), (4310, 18948), (4737, 17240), (5172, 15790), (6316, 12930), (6465, 12632), (7895, 10344), (8620, 9474)]