20407796

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{5309}}^1$

素因数の和:5375

約数の個数: 18

約数和(自身を含む): 36909810

約数和(自身を除く): 16502014

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 5309, 10618, 21236, 164579, 329158, 658316, 5101949, 10203898, 20407796]

約数ペア:

[(1, 20407796), (2, 10203898), (4, 5101949), (31, 658316), (62, 329158), (124, 164579), (961, 21236), (1922, 10618), (3844, 5309)]