20320240

素因数分解:

$2^4\times 5^1\times {\mathrm{254003}}^1$

素因数の和:254016

約数の個数: 20

約数和(自身を含む): 47244744

約数和(自身を除く): 26924504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254003, 508006, 1016012, 1270015, 2032024, 2540030, 4064048, 5080060, 10160120, 20320240]

約数ペア:

[(1, 20320240), (2, 10160120), (4, 5080060), (5, 4064048), (8, 2540030), (10, 2032024), (16, 1270015), (20, 1016012), (40, 508006), (80, 254003)]