19665315

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 37355520

約数和(自身を除く): 17690205

約数列:

[1, 3, 5, 9, 15, 27, 31, 37, 45, 93, 111, 127, 135, 155, 185, 279, 333, 381, 465, 555, 635, 837, 999, 1143, 1147, 1395, 1665, 1905, 3429, 3441, 3937, 4185, 4699, 4995, 5715, 5735, 10323, 11811, 14097, 17145, 17205, 19685, 23495, 30969, 35433, 42291, 51615, 59055, 70485, 106299, 126873, 145669, 154845, 177165, 211455, 437007, 531495, 634365, 728345, 1311021, 2185035, 3933063, 6555105, 19665315]

約数ペア:

[(1, 19665315), (3, 6555105), (5, 3933063), (9, 2185035), (15, 1311021), (27, 728345), (31, 634365), (37, 531495), (45, 437007), (93, 211455), (111, 177165), (127, 154845), (135, 145669), (155, 126873), (185, 106299), (279, 70485), (333, 59055), (381, 51615), (465, 42291), (555, 35433), (635, 30969), (837, 23495), (999, 19685), (1143, 17205), (1147, 17145), (1395, 14097), (1665, 11811), (1905, 10323), (3429, 5735), (3441, 5715), (3937, 4995), (4185, 4699)]