665087180

素因数分解:

$2^2\times 5^1\times {\mathrm{6421}}^1\times {\mathrm{5179}}^1$

素因数の和:11609

約数の個数: 24

約数和(自身を含む): 1397170320

約数和(自身を除く): 732083140

約数列:

[1, 2, 4, 5, 10, 20, 5179, 6421, 10358, 12842, 20716, 25684, 25895, 32105, 51790, 64210, 103580, 128420, 33254359, 66508718, 133017436, 166271795, 332543590, 665087180]

約数ペア:

[(1, 665087180), (2, 332543590), (4, 166271795), (5, 133017436), (10, 66508718), (20, 33254359), (5179, 128420), (6421, 103580), (10358, 64210), (12842, 51790), (20716, 32105), (25684, 25895)]