261205965

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 485229360

約数和(自身を除く): 224023395

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 97, 109, 135, 183, 291, 305, 327, 405, 485, 545, 549, 873, 915, 981, 1455, 1635, 1647, 2619, 2745, 2943, 4365, 4905, 4941, 5917, 6649, 7857, 8235, 8829, 10573, 13095, 14715, 17751, 19947, 24705, 29585, 31719, 33245, 39285, 44145, 52865, 53253, 59841, 88755, 95157, 99735, 158595, 159759, 179523, 266265, 285471, 299205, 475785, 479277, 538569, 644953, 798795, 856413, 897615, 1427355, 1934859, 2396385, 2692845, 3224765, 4282065, 5804577, 9674295, 17413731, 29022885, 52241193, 87068655, 261205965]

約数ペア:

[(1, 261205965), (3, 87068655), (5, 52241193), (9, 29022885), (15, 17413731), (27, 9674295), (45, 5804577), (61, 4282065), (81, 3224765), (97, 2692845), (109, 2396385), (135, 1934859), (183, 1427355), (291, 897615), (305, 856413), (327, 798795), (405, 644953), (485, 538569), (545, 479277), (549, 475785), (873, 299205), (915, 285471), (981, 266265), (1455, 179523), (1635, 159759), (1647, 158595), (2619, 99735), (2745, 95157), (2943, 88755), (4365, 59841), (4905, 53253), (4941, 52865), (5917, 44145), (6649, 39285), (7857, 33245), (8235, 31719), (8829, 29585), (10573, 24705), (13095, 19947), (14715, 17751)]