20855751

素因数分解:

$3^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1783}}^1$

素因数の和:2350

約数の個数: 16

約数和(自身を含む): 31855104

約数和(自身を除く): 10999353

約数列:

[1, 3, 7, 21, 557, 1671, 1783, 3899, 5349, 11697, 12481, 37443, 993131, 2979393, 6951917, 20855751]

約数ペア:

[(1, 20855751), (3, 6951917), (7, 2979393), (21, 993131), (557, 37443), (1671, 12481), (1783, 11697), (3899, 5349)]