19905370

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20521}}^1$

素因数の和:20625

約数の個数: 16

約数和(自身を含む): 36200808

約数和(自身を除く): 16295438

約数列:

[1, 2, 5, 10, 97, 194, 485, 970, 20521, 41042, 102605, 205210, 1990537, 3981074, 9952685, 19905370]

約数ペア:

[(1, 19905370), (2, 9952685), (5, 3981074), (10, 1990537), (97, 205210), (194, 102605), (485, 41042), (970, 20521)]