21874985

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:230

約数の個数: 32

約数和(自身を含む): 30568320

約数和(自身を除く): 8693335

約数列:

[1, 5, 11, 19, 55, 95, 121, 173, 209, 605, 865, 1045, 1331, 1903, 2299, 3287, 6655, 9515, 11495, 16435, 20933, 25289, 36157, 104665, 126445, 180785, 230263, 397727, 1151315, 1988635, 4374997, 21874985]

約数ペア:

[(1, 21874985), (5, 4374997), (11, 1988635), (19, 1151315), (55, 397727), (95, 230263), (121, 180785), (173, 126445), (209, 104665), (605, 36157), (865, 25289), (1045, 20933), (1331, 16435), (1903, 11495), (2299, 9515), (3287, 6655)]