20691722

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{1109}}^1$

素因数の和:1621

約数の個数: 16

約数和(自身を含む): 32767200

約数和(自身を除く): 12075478

約数列:

[1, 2, 19, 38, 491, 982, 1109, 2218, 9329, 18658, 21071, 42142, 544519, 1089038, 10345861, 20691722]

約数ペア:

[(1, 20691722), (2, 10345861), (19, 1089038), (38, 544519), (491, 42142), (982, 21071), (1109, 18658), (2218, 9329)]