28280637

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 53329920

約数和(自身を除く): 25049283

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 61, 63, 77, 99, 183, 189, 223, 231, 297, 427, 549, 669, 671, 693, 1281, 1561, 1647, 2007, 2013, 2079, 2453, 3843, 4683, 4697, 6021, 6039, 7359, 11529, 13603, 14049, 14091, 17171, 18117, 22077, 40809, 42147, 42273, 51513, 66231, 95221, 122427, 126819, 149633, 154539, 285663, 367281, 448899, 463617, 856989, 1047431, 1346697, 2570967, 3142293, 4040091, 9426879, 28280637]

約数ペア:

[(1, 28280637), (3, 9426879), (7, 4040091), (9, 3142293), (11, 2570967), (21, 1346697), (27, 1047431), (33, 856989), (61, 463617), (63, 448899), (77, 367281), (99, 285663), (183, 154539), (189, 149633), (223, 126819), (231, 122427), (297, 95221), (427, 66231), (549, 51513), (669, 42273), (671, 42147), (693, 40809), (1281, 22077), (1561, 18117), (1647, 17171), (2007, 14091), (2013, 14049), (2079, 13603), (2453, 11529), (3843, 7359), (4683, 6039), (4697, 6021)]