290840000

素因数分解:

$2^6\times 5^4\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:704

約数の個数: 140

約数和(自身を含む): 787941528

約数和(自身を除く): 497101528

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 125, 160, 176, 200, 220, 250, 275, 320, 352, 400, 440, 500, 550, 625, 661, 704, 800, 880, 1000, 1100, 1250, 1322, 1375, 1600, 1760, 2000, 2200, 2500, 2644, 2750, 3305, 3520, 4000, 4400, 5000, 5288, 5500, 6610, 6875, 7271, 8000, 8800, 10000, 10576, 11000, 13220, 13750, 14542, 16525, 17600, 20000, 21152, 22000, 26440, 27500, 29084, 33050, 36355, 40000, 42304, 44000, 52880, 55000, 58168, 66100, 72710, 82625, 88000, 105760, 110000, 116336, 132200, 145420, 165250, 181775, 211520, 220000, 232672, 264400, 290840, 330500, 363550, 413125, 440000, 465344, 528800, 581680, 661000, 727100, 826250, 908875, 1057600, 1163360, 1322000, 1454200, 1652500, 1817750, 2326720, 2644000, 2908400, 3305000, 3635500, 4544375, 5288000, 5816800, 6610000, 7271000, 9088750, 11633600, 13220000, 14542000, 18177500, 26440000, 29084000, 36355000, 58168000, 72710000, 145420000, 290840000]

約数ペア:

[(1, 290840000), (2, 145420000), (4, 72710000), (5, 58168000), (8, 36355000), (10, 29084000), (11, 26440000), (16, 18177500), (20, 14542000), (22, 13220000), (25, 11633600), (32, 9088750), (40, 7271000), (44, 6610000), (50, 5816800), (55, 5288000), (64, 4544375), (80, 3635500), (88, 3305000), (100, 2908400), (110, 2644000), (125, 2326720), (160, 1817750), (176, 1652500), (200, 1454200), (220, 1322000), (250, 1163360), (275, 1057600), (320, 908875), (352, 826250), (400, 727100), (440, 661000), (500, 581680), (550, 528800), (625, 465344), (661, 440000), (704, 413125), (800, 363550), (880, 330500), (1000, 290840), (1100, 264400), (1250, 232672), (1322, 220000), (1375, 211520), (1600, 181775), (1760, 165250), (2000, 145420), (2200, 132200), (2500, 116336), (2644, 110000), (2750, 105760), (3305, 88000), (3520, 82625), (4000, 72710), (4400, 66100), (5000, 58168), (5288, 55000), (5500, 52880), (6610, 44000), (6875, 42304), (7271, 40000), (8000, 36355), (8800, 33050), (10000, 29084), (10576, 27500), (11000, 26440), (13220, 22000), (13750, 21152), (14542, 20000), (16525, 17600)]