128973908

素因数分解:

$2^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{17923}}^1$

素因数の和:18191

約数の個数: 24

約数和(自身を含む): 258965952

約数和(自身を除く): 129992044

約数列:

[1, 2, 4, 7, 14, 28, 257, 514, 1028, 1799, 3598, 7196, 17923, 35846, 71692, 125461, 250922, 501844, 4606211, 9212422, 18424844, 32243477, 64486954, 128973908]

約数ペア:

[(1, 128973908), (2, 64486954), (4, 32243477), (7, 18424844), (14, 9212422), (28, 4606211), (257, 501844), (514, 250922), (1028, 125461), (1799, 71692), (3598, 35846), (7196, 17923)]