20983564

素因数分解:

$2^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{709}}^1$

素因数の和:878

約数の個数: 36

約数和(自身を含む): 43060080

約数和(自身を除く): 22076516

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 151, 196, 302, 604, 709, 1057, 1418, 2114, 2836, 4228, 4963, 7399, 9926, 14798, 19852, 29596, 34741, 69482, 107059, 138964, 214118, 428236, 749413, 1498826, 2997652, 5245891, 10491782, 20983564]

約数ペア:

[(1, 20983564), (2, 10491782), (4, 5245891), (7, 2997652), (14, 1498826), (28, 749413), (49, 428236), (98, 214118), (151, 138964), (196, 107059), (302, 69482), (604, 34741), (709, 29596), (1057, 19852), (1418, 14798), (2114, 9926), (2836, 7399), (4228, 4963)]