215940520

素因数分解:

$2^3\times 5^1\times {\mathrm{5398513}}^1$

素因数の和:5398524

約数の個数: 16

約数和(自身を含む): 485866260

約数和(自身を除く): 269925740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5398513, 10797026, 21594052, 26992565, 43188104, 53985130, 107970260, 215940520]

約数ペア:

[(1, 215940520), (2, 107970260), (4, 53985130), (5, 43188104), (8, 26992565), (10, 21594052), (20, 10797026), (40, 5398513)]