81138800

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2857}}^1$

素因数の和:2946

約数の個数: 60

約数和(自身を含む): 197750736

約数和(自身を除く): 116611936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 284, 355, 400, 568, 710, 1136, 1420, 1775, 2840, 2857, 3550, 5680, 5714, 7100, 11428, 14200, 14285, 22856, 28400, 28570, 45712, 57140, 71425, 114280, 142850, 202847, 228560, 285700, 405694, 571400, 811388, 1014235, 1142800, 1622776, 2028470, 3245552, 4056940, 5071175, 8113880, 10142350, 16227760, 20284700, 40569400, 81138800]

約数ペア:

[(1, 81138800), (2, 40569400), (4, 20284700), (5, 16227760), (8, 10142350), (10, 8113880), (16, 5071175), (20, 4056940), (25, 3245552), (40, 2028470), (50, 1622776), (71, 1142800), (80, 1014235), (100, 811388), (142, 571400), (200, 405694), (284, 285700), (355, 228560), (400, 202847), (568, 142850), (710, 114280), (1136, 71425), (1420, 57140), (1775, 45712), (2840, 28570), (2857, 28400), (3550, 22856), (5680, 14285), (5714, 14200), (7100, 11428)]