30479920

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2741}}^1$

素因数の和:2893

約数の個数: 40

約数和(自身を含む): 71401680

約数和(自身を除く): 40921760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2741, 2780, 5482, 5560, 10964, 11120, 13705, 21928, 27410, 43856, 54820, 109640, 219280, 380999, 761998, 1523996, 1904995, 3047992, 3809990, 6095984, 7619980, 15239960, 30479920]

約数ペア:

[(1, 30479920), (2, 15239960), (4, 7619980), (5, 6095984), (8, 3809990), (10, 3047992), (16, 1904995), (20, 1523996), (40, 761998), (80, 380999), (139, 219280), (278, 109640), (556, 54820), (695, 43856), (1112, 27410), (1390, 21928), (2224, 13705), (2741, 11120), (2780, 10964), (5482, 5560)]