81446428

素因数分解:

$2^2\times 7^2\times {\mathrm{415543}}^1$

素因数の和:415561

約数の個数: 18

約数和(自身を含む): 165802056

約数和(自身を除く): 84355628

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 415543, 831086, 1662172, 2908801, 5817602, 11635204, 20361607, 40723214, 81446428]

約数ペア:

[(1, 81446428), (2, 40723214), (4, 20361607), (7, 11635204), (14, 5817602), (28, 2908801), (49, 1662172), (98, 831086), (196, 415543)]