21220794

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9907}}^1$

素因数の和:9939

約数の個数: 48

約数和(自身を含む): 55643328

約数和(自身を除く): 34422534

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 306, 357, 714, 1071, 2142, 9907, 19814, 29721, 59442, 69349, 89163, 138698, 168419, 178326, 208047, 336838, 416094, 505257, 624141, 1010514, 1178933, 1248282, 1515771, 2357866, 3031542, 3536799, 7073598, 10610397, 21220794]

約数ペア:

[(1, 21220794), (2, 10610397), (3, 7073598), (6, 3536799), (7, 3031542), (9, 2357866), (14, 1515771), (17, 1248282), (18, 1178933), (21, 1010514), (34, 624141), (42, 505257), (51, 416094), (63, 336838), (102, 208047), (119, 178326), (126, 168419), (153, 138698), (238, 89163), (306, 69349), (357, 59442), (714, 29721), (1071, 19814), (2142, 9907)]