21249618

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 47275200

約数和(自身を除く): 26025582

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 74, 78, 111, 199, 222, 398, 481, 597, 962, 1194, 1369, 1443, 2587, 2738, 2886, 4107, 5174, 7363, 7761, 8214, 14726, 15522, 17797, 22089, 35594, 44178, 53391, 95719, 106782, 191438, 272431, 287157, 544862, 574314, 817293, 1634586, 3541603, 7083206, 10624809, 21249618]

約数ペア:

[(1, 21249618), (2, 10624809), (3, 7083206), (6, 3541603), (13, 1634586), (26, 817293), (37, 574314), (39, 544862), (74, 287157), (78, 272431), (111, 191438), (199, 106782), (222, 95719), (398, 53391), (481, 44178), (597, 35594), (962, 22089), (1194, 17797), (1369, 15522), (1443, 14726), (2587, 8214), (2738, 7761), (2886, 7363), (4107, 5174)]