20572100

素因数分解:

$2^2\times 5^2\times {\mathrm{205721}}^1$

素因数の和:205735

約数の個数: 18

約数和(自身を含む): 44641674

約数和(自身を除く): 24069574

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 205721, 411442, 822884, 1028605, 2057210, 4114420, 5143025, 10286050, 20572100]

約数ペア:

[(1, 20572100), (2, 10286050), (4, 5143025), (5, 4114420), (10, 2057210), (20, 1028605), (25, 822884), (50, 411442), (100, 205721)]