2021156560

素因数分解:

$2^4\times 5^1\times {\mathrm{3209}}^1\times {\mathrm{7873}}^1$

素因数の和:11095

約数の個数: 40

約数和(自身を含む): 4701250440

約数和(自身を除く): 2680093880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3209, 6418, 7873, 12836, 15746, 16045, 25672, 31492, 32090, 39365, 51344, 62984, 64180, 78730, 125968, 128360, 157460, 256720, 314920, 629840, 25264457, 50528914, 101057828, 126322285, 202115656, 252644570, 404231312, 505289140, 1010578280, 2021156560]

約数ペア:

[(1, 2021156560), (2, 1010578280), (4, 505289140), (5, 404231312), (8, 252644570), (10, 202115656), (16, 126322285), (20, 101057828), (40, 50528914), (80, 25264457), (3209, 629840), (6418, 314920), (7873, 256720), (12836, 157460), (15746, 128360), (16045, 125968), (25672, 78730), (31492, 64180), (32090, 62984), (39365, 51344)]