18781065

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{587}}^1$

素因数の和:683

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 15369975

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 587, 711, 1185, 1761, 2133, 2935, 3555, 5283, 6399, 8805, 10665, 15849, 26415, 31995, 46373, 47547, 79245, 139119, 231865, 237735, 417357, 695595, 1252071, 2086785, 3756213, 6260355, 18781065]

約数ペア:

[(1, 18781065), (3, 6260355), (5, 3756213), (9, 2086785), (15, 1252071), (27, 695595), (45, 417357), (79, 237735), (81, 231865), (135, 139119), (237, 79245), (395, 47547), (405, 46373), (587, 31995), (711, 26415), (1185, 15849), (1761, 10665), (2133, 8805), (2935, 6399), (3555, 5283)]