278437996840

素因数分解:

$2^3\times 5^1\times {\mathrm{6960949921}}^1$

素因数の和:6960949932

約数の個数: 16

約数和(自身を含む): 626485492980

約数和(自身を除く): 348047496140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6960949921, 13921899842, 27843799684, 34804749605, 55687599368, 69609499210, 139218998420, 278437996840]

約数ペア:

[(1, 278437996840), (2, 139218998420), (4, 69609499210), (5, 55687599368), (8, 34804749605), (10, 27843799684), (20, 13921899842), (40, 6960949921)]