20646256

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 41341104

約数和(自身を除く): 20694848

約数列:

[1, 2, 4, 8, 16, 53, 97, 106, 194, 212, 251, 388, 424, 502, 776, 848, 1004, 1552, 2008, 4016, 5141, 10282, 13303, 20564, 24347, 26606, 41128, 48694, 53212, 82256, 97388, 106424, 194776, 212848, 389552, 1290391, 2580782, 5161564, 10323128, 20646256]

約数ペア:

[(1, 20646256), (2, 10323128), (4, 5161564), (8, 2580782), (16, 1290391), (53, 389552), (97, 212848), (106, 194776), (194, 106424), (212, 97388), (251, 82256), (388, 53212), (424, 48694), (502, 41128), (776, 26606), (848, 24347), (1004, 20564), (1552, 13303), (2008, 10282), (4016, 5141)]