128412880

素因数分解:

$2^4\times 5^1\times {\mathrm{857}}^1\times {\mathrm{1873}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 299067912

約数和(自身を除く): 170655032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 857, 1714, 1873, 3428, 3746, 4285, 6856, 7492, 8570, 9365, 13712, 14984, 17140, 18730, 29968, 34280, 37460, 68560, 74920, 149840, 1605161, 3210322, 6420644, 8025805, 12841288, 16051610, 25682576, 32103220, 64206440, 128412880]

約数ペア:

[(1, 128412880), (2, 64206440), (4, 32103220), (5, 25682576), (8, 16051610), (10, 12841288), (16, 8025805), (20, 6420644), (40, 3210322), (80, 1605161), (857, 149840), (1714, 74920), (1873, 68560), (3428, 37460), (3746, 34280), (4285, 29968), (6856, 18730), (7492, 17140), (8570, 14984), (9365, 13712)]