78581660

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 168648480

約数和(自身を除く): 90066820

約数列:

[1, 2, 4, 5, 10, 20, 89, 131, 178, 262, 337, 356, 445, 524, 655, 674, 890, 1310, 1348, 1685, 1780, 2620, 3370, 6740, 11659, 23318, 29993, 44147, 46636, 58295, 59986, 88294, 116590, 119972, 149965, 176588, 220735, 233180, 299930, 441470, 599860, 882940, 3929083, 7858166, 15716332, 19645415, 39290830, 78581660]

約数ペア:

[(1, 78581660), (2, 39290830), (4, 19645415), (5, 15716332), (10, 7858166), (20, 3929083), (89, 882940), (131, 599860), (178, 441470), (262, 299930), (337, 233180), (356, 220735), (445, 176588), (524, 149965), (655, 119972), (674, 116590), (890, 88294), (1310, 59986), (1348, 58295), (1685, 46636), (1780, 44147), (2620, 29993), (3370, 23318), (6740, 11659)]