21215590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10151}}^1$

素因数の和:10188

約数の個数: 32

約数和(自身を含む): 43856640

約数和(自身を除く): 22641050

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 10151, 20302, 50755, 101510, 111661, 192869, 223322, 385738, 558305, 964345, 1116610, 1928690, 2121559, 4243118, 10607795, 21215590]

約数ペア:

[(1, 21215590), (2, 10607795), (5, 4243118), (10, 2121559), (11, 1928690), (19, 1116610), (22, 964345), (38, 558305), (55, 385738), (95, 223322), (110, 192869), (190, 111661), (209, 101510), (418, 50755), (1045, 20302), (2090, 10151)]