20197900

素因数分解:

$2^2\times 5^2\times {\mathrm{201979}}^1$

素因数の和:201993

約数の個数: 18

約数和(自身を含む): 43829660

約数和(自身を除く): 23631760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201979, 403958, 807916, 1009895, 2019790, 4039580, 5049475, 10098950, 20197900]

約数ペア:

[(1, 20197900), (2, 10098950), (4, 5049475), (5, 4039580), (10, 2019790), (20, 1009895), (25, 807916), (50, 403958), (100, 201979)]