199972100

素因数分解:

$2^2\times 5^2\times {\mathrm{1999721}}^1$

素因数の和:1999735

約数の個数: 18

約数和(自身を含む): 433939674

約数和(自身を除く): 233967574

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1999721, 3999442, 7998884, 9998605, 19997210, 39994420, 49993025, 99986050, 199972100]

約数ペア:

[(1, 199972100), (2, 99986050), (4, 49993025), (5, 39994420), (10, 19997210), (20, 9998605), (25, 7998884), (50, 3999442), (100, 1999721)]