78620000

素因数分解:

$2^5\times 5^4\times {\mathrm{3931}}^1$

素因数の和:3961

約数の個数: 60

約数和(自身を含む): 193466196

約数和(自身を除く): 114846196

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 3931, 4000, 5000, 7862, 10000, 15724, 19655, 20000, 31448, 39310, 62896, 78620, 98275, 125792, 157240, 196550, 314480, 393100, 491375, 628960, 786200, 982750, 1572400, 1965500, 2456875, 3144800, 3931000, 4913750, 7862000, 9827500, 15724000, 19655000, 39310000, 78620000]

約数ペア:

[(1, 78620000), (2, 39310000), (4, 19655000), (5, 15724000), (8, 9827500), (10, 7862000), (16, 4913750), (20, 3931000), (25, 3144800), (32, 2456875), (40, 1965500), (50, 1572400), (80, 982750), (100, 786200), (125, 628960), (160, 491375), (200, 393100), (250, 314480), (400, 196550), (500, 157240), (625, 125792), (800, 98275), (1000, 78620), (1250, 62896), (2000, 39310), (2500, 31448), (3931, 20000), (4000, 19655), (5000, 15724), (7862, 10000)]