18986781680

素因数分解:

$2^4\times 5^1\times {\mathrm{237334771}}^1$

素因数の和:237334784

約数の個数: 20

約数和(自身を含む): 44144267592

約数和(自身を除く): 25157485912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 237334771, 474669542, 949339084, 1186673855, 1898678168, 2373347710, 3797356336, 4746695420, 9493390840, 18986781680]

約数ペア:

[(1, 18986781680), (2, 9493390840), (4, 4746695420), (5, 3797356336), (8, 2373347710), (10, 1898678168), (16, 1186673855), (20, 949339084), (40, 474669542), (80, 237334771)]