64752880

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1979}}^1$

素因数の和:2401

約数の個数: 40

約数和(自身を含む): 150994800

約数和(自身を除く): 86241920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 1979, 2045, 3272, 3958, 4090, 6544, 7916, 8180, 9895, 15832, 16360, 19790, 31664, 32720, 39580, 79160, 158320, 809411, 1618822, 3237644, 4047055, 6475288, 8094110, 12950576, 16188220, 32376440, 64752880]

約数ペア:

[(1, 64752880), (2, 32376440), (4, 16188220), (5, 12950576), (8, 8094110), (10, 6475288), (16, 4047055), (20, 3237644), (40, 1618822), (80, 809411), (409, 158320), (818, 79160), (1636, 39580), (1979, 32720), (2045, 31664), (3272, 19790), (3958, 16360), (4090, 15832), (6544, 9895), (7916, 8180)]