1664353925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{659}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 2348808000

約数和(自身を除く): 684454075

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 409, 475, 659, 1235, 2045, 3295, 5317, 6175, 7771, 8567, 10225, 12521, 16475, 26585, 38855, 42835, 62605, 101023, 132925, 162773, 194275, 214175, 269531, 313025, 505115, 813865, 1347655, 2525575, 3503903, 4069325, 5121089, 6738275, 17519515, 25605445, 66574157, 87597575, 128027225, 332870785, 1664353925]

約数ペア:

[(1, 1664353925), (5, 332870785), (13, 128027225), (19, 87597575), (25, 66574157), (65, 25605445), (95, 17519515), (247, 6738275), (325, 5121089), (409, 4069325), (475, 3503903), (659, 2525575), (1235, 1347655), (2045, 813865), (3295, 505115), (5317, 313025), (6175, 269531), (7771, 214175), (8567, 194275), (10225, 162773), (12521, 132925), (16475, 101023), (26585, 62605), (38855, 42835)]