81678400

素因数分解:

$2^6\times 5^2\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:812

約数の個数: 84

約数和(自身を含む): 204094080

約数和(自身を除く): 122415680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 71, 80, 100, 142, 160, 200, 284, 320, 355, 400, 568, 710, 719, 800, 1136, 1420, 1438, 1600, 1775, 2272, 2840, 2876, 3550, 3595, 4544, 5680, 5752, 7100, 7190, 11360, 11504, 14200, 14380, 17975, 22720, 23008, 28400, 28760, 35950, 46016, 51049, 56800, 57520, 71900, 102098, 113600, 115040, 143800, 204196, 230080, 255245, 287600, 408392, 510490, 575200, 816784, 1020980, 1150400, 1276225, 1633568, 2041960, 2552450, 3267136, 4083920, 5104900, 8167840, 10209800, 16335680, 20419600, 40839200, 81678400]

約数ペア:

[(1, 81678400), (2, 40839200), (4, 20419600), (5, 16335680), (8, 10209800), (10, 8167840), (16, 5104900), (20, 4083920), (25, 3267136), (32, 2552450), (40, 2041960), (50, 1633568), (64, 1276225), (71, 1150400), (80, 1020980), (100, 816784), (142, 575200), (160, 510490), (200, 408392), (284, 287600), (320, 255245), (355, 230080), (400, 204196), (568, 143800), (710, 115040), (719, 113600), (800, 102098), (1136, 71900), (1420, 57520), (1438, 56800), (1600, 51049), (1775, 46016), (2272, 35950), (2840, 28760), (2876, 28400), (3550, 23008), (3595, 22720), (4544, 17975), (5680, 14380), (5752, 14200), (7100, 11504), (7190, 11360)]