21898610

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 40753152

約数和(自身を除く): 18854542

約数列:

[1, 2, 5, 10, 43, 86, 127, 215, 254, 401, 430, 635, 802, 1270, 2005, 4010, 5461, 10922, 17243, 27305, 34486, 50927, 54610, 86215, 101854, 172430, 254635, 509270, 2189861, 4379722, 10949305, 21898610]

約数ペア:

[(1, 21898610), (2, 10949305), (5, 4379722), (10, 2189861), (43, 509270), (86, 254635), (127, 172430), (215, 101854), (254, 86215), (401, 54610), (430, 50927), (635, 34486), (802, 27305), (1270, 17243), (2005, 10922), (4010, 5461)]