21130384

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{569}}^1$

素因数の和:799

約数の個数: 40

約数和(自身を含む): 44952480

約数和(自身を除く): 23822096

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 211, 422, 569, 844, 1138, 1688, 2276, 2321, 3376, 4552, 4642, 6259, 9104, 9284, 12518, 18568, 25036, 37136, 50072, 100144, 120059, 240118, 480236, 960472, 1320649, 1920944, 2641298, 5282596, 10565192, 21130384]

約数ペア:

[(1, 21130384), (2, 10565192), (4, 5282596), (8, 2641298), (11, 1920944), (16, 1320649), (22, 960472), (44, 480236), (88, 240118), (176, 120059), (211, 100144), (422, 50072), (569, 37136), (844, 25036), (1138, 18568), (1688, 12518), (2276, 9284), (2321, 9104), (3376, 6259), (4552, 4642)]