20666776

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{198719}}^1$

素因数の和:198738

約数の個数: 16

約数和(自身を含む): 41731200

約数和(自身を除く): 21064424

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 198719, 397438, 794876, 1589752, 2583347, 5166694, 10333388, 20666776]

約数ペア:

[(1, 20666776), (2, 10333388), (4, 5166694), (8, 2583347), (13, 1589752), (26, 794876), (52, 397438), (104, 198719)]