28120323

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 22567677

約数列:

[1, 3, 7, 11, 19, 21, 33, 43, 57, 77, 129, 133, 149, 209, 231, 301, 399, 447, 473, 627, 817, 903, 1043, 1419, 1463, 1639, 2451, 2831, 3129, 3311, 4389, 4917, 5719, 6407, 8493, 8987, 9933, 11473, 17157, 19221, 19817, 26961, 31141, 34419, 44849, 59451, 62909, 70477, 93423, 121733, 134547, 188727, 211431, 217987, 365199, 493339, 653961, 852131, 1339063, 1480017, 2556393, 4017189, 9373441, 28120323]

約数ペア:

[(1, 28120323), (3, 9373441), (7, 4017189), (11, 2556393), (19, 1480017), (21, 1339063), (33, 852131), (43, 653961), (57, 493339), (77, 365199), (129, 217987), (133, 211431), (149, 188727), (209, 134547), (231, 121733), (301, 93423), (399, 70477), (447, 62909), (473, 59451), (627, 44849), (817, 34419), (903, 31141), (1043, 26961), (1419, 19817), (1463, 19221), (1639, 17157), (2451, 11473), (2831, 9933), (3129, 8987), (3311, 8493), (4389, 6407), (4917, 5719)]