19911486

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 48254976

約数和(自身を除く): 28343490

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 41, 42, 62, 82, 93, 123, 186, 217, 246, 287, 373, 434, 574, 651, 746, 861, 1119, 1271, 1302, 1722, 2238, 2542, 2611, 3813, 5222, 7626, 7833, 8897, 11563, 15293, 15666, 17794, 23126, 26691, 30586, 34689, 45879, 53382, 69378, 80941, 91758, 107051, 161882, 214102, 242823, 321153, 474083, 485646, 642306, 948166, 1422249, 2844498, 3318581, 6637162, 9955743, 19911486]

約数ペア:

[(1, 19911486), (2, 9955743), (3, 6637162), (6, 3318581), (7, 2844498), (14, 1422249), (21, 948166), (31, 642306), (41, 485646), (42, 474083), (62, 321153), (82, 242823), (93, 214102), (123, 161882), (186, 107051), (217, 91758), (246, 80941), (287, 69378), (373, 53382), (434, 45879), (574, 34689), (651, 30586), (746, 26691), (861, 23126), (1119, 17794), (1271, 15666), (1302, 15293), (1722, 11563), (2238, 8897), (2542, 7833), (2611, 7626), (3813, 5222)]