21865030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1224

約数の個数: 32

約数和(自身を含む): 43195680

約数和(自身を除く): 21330650

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197, 394, 985, 1009, 1970, 2018, 2167, 4334, 5045, 10090, 10835, 11099, 21670, 22198, 55495, 110990, 198773, 397546, 993865, 1987730, 2186503, 4373006, 10932515, 21865030]

約数ペア:

[(1, 21865030), (2, 10932515), (5, 4373006), (10, 2186503), (11, 1987730), (22, 993865), (55, 397546), (110, 198773), (197, 110990), (394, 55495), (985, 22198), (1009, 21670), (1970, 11099), (2018, 10835), (2167, 10090), (4334, 5045)]