20355878

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{1091}}^1$

素因数の和:1603

約数の個数: 16

約数和(自身を含む): 32235840

約数和(自身を除く): 11879962

約数列:

[1, 2, 19, 38, 491, 982, 1091, 2182, 9329, 18658, 20729, 41458, 535681, 1071362, 10177939, 20355878]

約数ペア:

[(1, 20355878), (2, 10177939), (19, 1071362), (38, 535681), (491, 41458), (982, 20729), (1091, 18658), (2182, 9329)]