20199278575

素因数分解:

$5^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{123979}}^1$

素因数の和:124029

約数の個数: 48

約数和(自身を含む): 30747040000

約数和(自身を除く): 10547761425

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 133, 175, 245, 343, 475, 665, 931, 1225, 1715, 3325, 4655, 6517, 8575, 23275, 32585, 123979, 162925, 619895, 867853, 2355601, 3099475, 4339265, 6074971, 11778005, 16489207, 21696325, 30374855, 42524797, 58890025, 82446035, 115424449, 151874275, 212623985, 412230175, 577122245, 807971143, 1063119925, 2885611225, 4039855715, 20199278575]

約数ペア:

[(1, 20199278575), (5, 4039855715), (7, 2885611225), (19, 1063119925), (25, 807971143), (35, 577122245), (49, 412230175), (95, 212623985), (133, 151874275), (175, 115424449), (245, 82446035), (343, 58890025), (475, 42524797), (665, 30374855), (931, 21696325), (1225, 16489207), (1715, 11778005), (3325, 6074971), (4655, 4339265), (6517, 3099475), (8575, 2355601), (23275, 867853), (32585, 619895), (123979, 162925)]