395589080

素因数分解:

$2^3\times 5^1\times {\mathrm{2543}}^1\times {\mathrm{3889}}^1$

素因数の和:6443

約数の個数: 32

約数和(自身を含む): 890654400

約数和(自身を除く): 495065320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2543, 3889, 5086, 7778, 10172, 12715, 15556, 19445, 20344, 25430, 31112, 38890, 50860, 77780, 101720, 155560, 9889727, 19779454, 39558908, 49448635, 79117816, 98897270, 197794540, 395589080]

約数ペア:

[(1, 395589080), (2, 197794540), (4, 98897270), (5, 79117816), (8, 49448635), (10, 39558908), (20, 19779454), (40, 9889727), (2543, 155560), (3889, 101720), (5086, 77780), (7778, 50860), (10172, 38890), (12715, 31112), (15556, 25430), (19445, 20344)]