20818672

素因数分解:

$2^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1231}}^1$

素因数の和:1397

約数の個数: 40

約数和(自身を含む): 46441472

約数和(自身を除く): 25622800

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 151, 302, 604, 1057, 1208, 1231, 2114, 2416, 2462, 4228, 4924, 8456, 8617, 9848, 16912, 17234, 19696, 34468, 68936, 137872, 185881, 371762, 743524, 1301167, 1487048, 2602334, 2974096, 5204668, 10409336, 20818672]

約数ペア:

[(1, 20818672), (2, 10409336), (4, 5204668), (7, 2974096), (8, 2602334), (14, 1487048), (16, 1301167), (28, 743524), (56, 371762), (112, 185881), (151, 137872), (302, 68936), (604, 34468), (1057, 19696), (1208, 17234), (1231, 16912), (2114, 9848), (2416, 8617), (2462, 8456), (4228, 4924)]