20785328

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:381

約数の個数: 40

約数和(自身を含む): 41568768

約数和(自身を除く): 20783440

約数列:

[1, 2, 4, 8, 16, 53, 106, 127, 193, 212, 254, 386, 424, 508, 772, 848, 1016, 1544, 2032, 3088, 6731, 10229, 13462, 20458, 24511, 26924, 40916, 49022, 53848, 81832, 98044, 107696, 163664, 196088, 392176, 1299083, 2598166, 5196332, 10392664, 20785328]

約数ペア:

[(1, 20785328), (2, 10392664), (4, 5196332), (8, 2598166), (16, 1299083), (53, 392176), (106, 196088), (127, 163664), (193, 107696), (212, 98044), (254, 81832), (386, 53848), (424, 49022), (508, 40916), (772, 26924), (848, 24511), (1016, 20458), (1544, 13462), (2032, 10229), (3088, 6731)]