15721811805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:715

約数の個数: 128

約数和(自身を含む): 30615625728

約数和(自身を除く): 14893813923

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 73, 105, 115, 161, 219, 257, 345, 347, 365, 483, 511, 771, 805, 1041, 1095, 1285, 1533, 1679, 1735, 1799, 2415, 2429, 2555, 3855, 5037, 5205, 5397, 5911, 7287, 7665, 7981, 8395, 8995, 11753, 12145, 17733, 18761, 23943, 25185, 25331, 26985, 29555, 35259, 36435, 39905, 41377, 55867, 56283, 58765, 75993, 88665, 89179, 93805, 119715, 124131, 126655, 131327, 167601, 176295, 177317, 206885, 267537, 279335, 281415, 379965, 393981, 431503, 445895, 531951, 582613, 620655, 624253, 656635, 838005, 886585, 1294509, 1337685, 1747839, 1872759, 1969905, 2051117, 2157515, 2659755, 2913065, 3020521, 3121265, 4078291, 6153351, 6472545, 6510067, 8739195, 9061563, 9363795, 10255585, 12234873, 14357819, 15102605, 19530201, 20391455, 30766755, 32550335, 43073457, 45307815, 45570469, 61174365, 71789095, 97651005, 136711407, 149731541, 215367285, 227852345, 449194623, 683557035, 748657705, 1048120787, 2245973115, 3144362361, 5240603935, 15721811805]

約数ペア:

[(1, 15721811805), (3, 5240603935), (5, 3144362361), (7, 2245973115), (15, 1048120787), (21, 748657705), (23, 683557035), (35, 449194623), (69, 227852345), (73, 215367285), (105, 149731541), (115, 136711407), (161, 97651005), (219, 71789095), (257, 61174365), (345, 45570469), (347, 45307815), (365, 43073457), (483, 32550335), (511, 30766755), (771, 20391455), (805, 19530201), (1041, 15102605), (1095, 14357819), (1285, 12234873), (1533, 10255585), (1679, 9363795), (1735, 9061563), (1799, 8739195), (2415, 6510067), (2429, 6472545), (2555, 6153351), (3855, 4078291), (5037, 3121265), (5205, 3020521), (5397, 2913065), (5911, 2659755), (7287, 2157515), (7665, 2051117), (7981, 1969905), (8395, 1872759), (8995, 1747839), (11753, 1337685), (12145, 1294509), (17733, 886585), (18761, 838005), (23943, 656635), (25185, 624253), (25331, 620655), (26985, 582613), (29555, 531951), (35259, 445895), (36435, 431503), (39905, 393981), (41377, 379965), (55867, 281415), (56283, 279335), (58765, 267537), (75993, 206885), (88665, 177317), (89179, 176295), (93805, 167601), (119715, 131327), (124131, 126655)]