28079865

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 55770624

約数和(自身を除く): 27690759

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 121, 135, 165, 191, 243, 297, 363, 405, 495, 573, 605, 891, 955, 1089, 1215, 1485, 1719, 1815, 2101, 2673, 2865, 3267, 4455, 5157, 5445, 6303, 8595, 9801, 10505, 13365, 15471, 16335, 18909, 23111, 25785, 29403, 31515, 46413, 49005, 56727, 69333, 77355, 94545, 115555, 147015, 170181, 207999, 232065, 283635, 346665, 510543, 623997, 850905, 1039995, 1871991, 2552715, 3119985, 5615973, 9359955, 28079865]

約数ペア:

[(1, 28079865), (3, 9359955), (5, 5615973), (9, 3119985), (11, 2552715), (15, 1871991), (27, 1039995), (33, 850905), (45, 623997), (55, 510543), (81, 346665), (99, 283635), (121, 232065), (135, 207999), (165, 170181), (191, 147015), (243, 115555), (297, 94545), (363, 77355), (405, 69333), (495, 56727), (573, 49005), (605, 46413), (891, 31515), (955, 29403), (1089, 25785), (1215, 23111), (1485, 18909), (1719, 16335), (1815, 15471), (2101, 13365), (2673, 10505), (2865, 9801), (3267, 8595), (4455, 6303), (5157, 5445)]