84070400

素因数分解:

$2^{12}\times 5^2\times {\mathrm{821}}^1$

素因数の和:855

約数の個数: 78

約数和(自身を含む): 208723062

約数和(自身を除く): 124652662

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 821, 1024, 1280, 1600, 1642, 2048, 2560, 3200, 3284, 4096, 4105, 5120, 6400, 6568, 8210, 10240, 12800, 13136, 16420, 20480, 20525, 25600, 26272, 32840, 41050, 51200, 52544, 65680, 82100, 102400, 105088, 131360, 164200, 210176, 262720, 328400, 420352, 525440, 656800, 840704, 1050880, 1313600, 1681408, 2101760, 2627200, 3362816, 4203520, 5254400, 8407040, 10508800, 16814080, 21017600, 42035200, 84070400]

約数ペア:

[(1, 84070400), (2, 42035200), (4, 21017600), (5, 16814080), (8, 10508800), (10, 8407040), (16, 5254400), (20, 4203520), (25, 3362816), (32, 2627200), (40, 2101760), (50, 1681408), (64, 1313600), (80, 1050880), (100, 840704), (128, 656800), (160, 525440), (200, 420352), (256, 328400), (320, 262720), (400, 210176), (512, 164200), (640, 131360), (800, 105088), (821, 102400), (1024, 82100), (1280, 65680), (1600, 52544), (1642, 51200), (2048, 41050), (2560, 32840), (3200, 26272), (3284, 25600), (4096, 20525), (4105, 20480), (5120, 16420), (6400, 13136), (6568, 12800), (8210, 10240)]