721344080

素因数分解:

$2^4\times 5^1\times {\mathrm{9016801}}^1$

素因数の和:9016814

約数の個数: 20

約数和(自身を含む): 1677125172

約数和(自身を除く): 955781092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9016801, 18033602, 36067204, 45084005, 72134408, 90168010, 144268816, 180336020, 360672040, 721344080]

約数ペア:

[(1, 721344080), (2, 360672040), (4, 180336020), (5, 144268816), (8, 90168010), (10, 72134408), (16, 45084005), (20, 36067204), (40, 18033602), (80, 9016801)]