290840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 714960

約数和(自身を除く): 424120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 661, 1322, 2644, 3305, 5288, 6610, 7271, 13220, 14542, 26440, 29084, 36355, 58168, 72710, 145420, 290840]

約数ペア:

[(1, 290840), (2, 145420), (4, 72710), (5, 58168), (8, 36355), (10, 29084), (11, 26440), (20, 14542), (22, 13220), (40, 7271), (44, 6610), (55, 5288), (88, 3305), (110, 2644), (220, 1322), (440, 661)]