21125874

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4157}}^1$

素因数の和:4191

約数の個数: 48

約数和(自身を含む): 53089344

約数和(自身を除く): 31963470

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 121, 154, 231, 242, 363, 462, 726, 847, 1694, 2541, 4157, 5082, 8314, 12471, 24942, 29099, 45727, 58198, 87297, 91454, 137181, 174594, 274362, 320089, 502997, 640178, 960267, 1005994, 1508991, 1920534, 3017982, 3520979, 7041958, 10562937, 21125874]

約数ペア:

[(1, 21125874), (2, 10562937), (3, 7041958), (6, 3520979), (7, 3017982), (11, 1920534), (14, 1508991), (21, 1005994), (22, 960267), (33, 640178), (42, 502997), (66, 320089), (77, 274362), (121, 174594), (154, 137181), (231, 91454), (242, 87297), (363, 58198), (462, 45727), (726, 29099), (847, 24942), (1694, 12471), (2541, 8314), (4157, 5082)]