21421510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8467}}^1$

素因数の和:8508

約数の個数: 32

約数和(自身を含む): 43898112

約数和(自身を除く): 22476602

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8467, 16934, 42335, 84670, 93137, 186274, 194741, 389482, 465685, 931370, 973705, 1947410, 2142151, 4284302, 10710755, 21421510]

約数ペア:

[(1, 21421510), (2, 10710755), (5, 4284302), (10, 2142151), (11, 1947410), (22, 973705), (23, 931370), (46, 465685), (55, 389482), (110, 194741), (115, 186274), (230, 93137), (253, 84670), (506, 42335), (1265, 16934), (2530, 8467)]