20880070

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:576

約数の個数: 32

約数和(自身を含む): 38900736

約数和(自身を除く): 18020666

約数列:

[1, 2, 5, 10, 41, 82, 127, 205, 254, 401, 410, 635, 802, 1270, 2005, 4010, 5207, 10414, 16441, 26035, 32882, 50927, 52070, 82205, 101854, 164410, 254635, 509270, 2088007, 4176014, 10440035, 20880070]

約数ペア:

[(1, 20880070), (2, 10440035), (5, 4176014), (10, 2088007), (41, 509270), (82, 254635), (127, 164410), (205, 101854), (254, 82205), (401, 52070), (410, 50927), (635, 32882), (802, 26035), (1270, 16441), (2005, 10414), (4010, 5207)]