128779568

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{423617}}^1$

素因数の和:423644

約数の個数: 20

約数和(自身を含む): 262643160

約数和(自身を除く): 133863592

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 423617, 847234, 1694468, 3388936, 6777872, 8048723, 16097446, 32194892, 64389784, 128779568]

約数ペア:

[(1, 128779568), (2, 64389784), (4, 32194892), (8, 16097446), (16, 8048723), (19, 6777872), (38, 3388936), (76, 1694468), (152, 847234), (304, 423617)]