81357320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{184903}}^1$

素因数の和:184925

約数の個数: 32

約数和(自身を含む): 199696320

約数和(自身を除く): 118339000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184903, 369806, 739612, 924515, 1479224, 1849030, 2033933, 3698060, 4067866, 7396120, 8135732, 10169665, 16271464, 20339330, 40678660, 81357320]

約数ペア:

[(1, 81357320), (2, 40678660), (4, 20339330), (5, 16271464), (8, 10169665), (10, 8135732), (11, 7396120), (20, 4067866), (22, 3698060), (40, 2033933), (44, 1849030), (55, 1479224), (88, 924515), (110, 739612), (220, 369806), (440, 184903)]