19980200

素因数分解:

$2^3\times 5^2\times {\mathrm{99901}}^1$

素因数の和:99917

約数の個数: 24

約数和(自身を含む): 46454430

約数和(自身を除く): 26474230

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 99901, 199802, 399604, 499505, 799208, 999010, 1998020, 2497525, 3996040, 4995050, 9990100, 19980200]

約数ペア:

[(1, 19980200), (2, 9990100), (4, 4995050), (5, 3996040), (8, 2497525), (10, 1998020), (20, 999010), (25, 799208), (40, 499505), (50, 399604), (100, 199802), (200, 99901)]