581680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:685

約数の個数: 40

約数和(自身を含む): 1477584

約数和(自身を除く): 895904

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 661, 880, 1322, 2644, 3305, 5288, 6610, 7271, 10576, 13220, 14542, 26440, 29084, 36355, 52880, 58168, 72710, 116336, 145420, 290840, 581680]

約数ペア:

[(1, 581680), (2, 290840), (4, 145420), (5, 116336), (8, 72710), (10, 58168), (11, 52880), (16, 36355), (20, 29084), (22, 26440), (40, 14542), (44, 13220), (55, 10576), (80, 7271), (88, 6610), (110, 5288), (176, 3305), (220, 2644), (440, 1322), (661, 880)]