438154340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1685209}}^1$

素因数の和:1685231

約数の個数: 24

約数和(自身を含む): 990903480

約数和(自身を除く): 552749140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1685209, 3370418, 6740836, 8426045, 16852090, 21907717, 33704180, 43815434, 87630868, 109538585, 219077170, 438154340]

約数ペア:

[(1, 438154340), (2, 219077170), (4, 109538585), (5, 87630868), (10, 43815434), (13, 33704180), (20, 21907717), (26, 16852090), (52, 8426045), (65, 6740836), (130, 3370418), (260, 1685209)]