72001900

素因数分解:

$2^2\times 5^2\times {\mathrm{720019}}^1$

素因数の和:720033

約数の個数: 18

約数和(自身を含む): 156244340

約数和(自身を除く): 84242440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 720019, 1440038, 2880076, 3600095, 7200190, 14400380, 18000475, 36000950, 72001900]

約数ペア:

[(1, 72001900), (2, 36000950), (4, 18000475), (5, 14400380), (10, 7200190), (20, 3600095), (25, 2880076), (50, 1440038), (100, 720019)]