2780512880

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{84979}}^1$

素因数の和:85401

約数の個数: 40

約数和(自身を含む): 6480574800

約数和(自身を除く): 3700061920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 16360, 32720, 84979, 169958, 339916, 424895, 679832, 849790, 1359664, 1699580, 3399160, 6798320, 34756411, 69512822, 139025644, 173782055, 278051288, 347564110, 556102576, 695128220, 1390256440, 2780512880]

約数ペア:

[(1, 2780512880), (2, 1390256440), (4, 695128220), (5, 556102576), (8, 347564110), (10, 278051288), (16, 173782055), (20, 139025644), (40, 69512822), (80, 34756411), (409, 6798320), (818, 3399160), (1636, 1699580), (2045, 1359664), (3272, 849790), (4090, 679832), (6544, 424895), (8180, 339916), (16360, 169958), (32720, 84979)]