78218775

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 146917680

約数和(自身を除く): 68698905

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 61, 75, 123, 139, 183, 205, 225, 305, 369, 417, 549, 615, 695, 915, 1025, 1251, 1525, 1845, 2085, 2501, 2745, 3075, 3475, 4575, 5699, 6255, 7503, 8479, 9225, 10425, 12505, 13725, 17097, 22509, 25437, 28495, 31275, 37515, 42395, 51291, 62525, 76311, 85485, 112545, 127185, 142475, 187575, 211975, 256455, 347639, 381555, 427425, 562725, 635925, 1042917, 1282275, 1738195, 1907775, 3128751, 5214585, 8690975, 15643755, 26072925, 78218775]

約数ペア:

[(1, 78218775), (3, 26072925), (5, 15643755), (9, 8690975), (15, 5214585), (25, 3128751), (41, 1907775), (45, 1738195), (61, 1282275), (75, 1042917), (123, 635925), (139, 562725), (183, 427425), (205, 381555), (225, 347639), (305, 256455), (369, 211975), (417, 187575), (549, 142475), (615, 127185), (695, 112545), (915, 85485), (1025, 76311), (1251, 62525), (1525, 51291), (1845, 42395), (2085, 37515), (2501, 31275), (2745, 28495), (3075, 25437), (3475, 22509), (4575, 17097), (5699, 13725), (6255, 12505), (7503, 10425), (8479, 9225)]