20784848

素因数分解:

$2^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1229}}^1$

素因数の和:1395

約数の個数: 40

約数和(自身を含む): 46366080

約数和(自身を除く): 25581232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 151, 302, 604, 1057, 1208, 1229, 2114, 2416, 2458, 4228, 4916, 8456, 8603, 9832, 16912, 17206, 19664, 34412, 68824, 137648, 185579, 371158, 742316, 1299053, 1484632, 2598106, 2969264, 5196212, 10392424, 20784848]

約数ペア:

[(1, 20784848), (2, 10392424), (4, 5196212), (7, 2969264), (8, 2598106), (14, 1484632), (16, 1299053), (28, 742316), (56, 371158), (112, 185579), (151, 137648), (302, 68824), (604, 34412), (1057, 19664), (1208, 17206), (1229, 16912), (2114, 9832), (2416, 8603), (2458, 8456), (4228, 4916)]