20954787

素因数分解:

$3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{2273}}^1$

素因数の和:2722

約数の個数: 16

約数和(自身を含む): 32017920

約数和(自身を除く): 11063133

約数列:

[1, 3, 7, 21, 439, 1317, 2273, 3073, 6819, 9219, 15911, 47733, 997847, 2993541, 6984929, 20954787]

約数ペア:

[(1, 20954787), (3, 6984929), (7, 2993541), (21, 997847), (439, 47733), (1317, 15911), (2273, 9219), (3073, 6819)]