20947036

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{383}}^1$

素因数の和:522

約数の個数: 36

約数和(自身を含む): 40755456

約数和(自身を除く): 19808420

約数列:

[1, 2, 4, 11, 22, 44, 113, 121, 226, 242, 383, 452, 484, 766, 1243, 1532, 2486, 4213, 4972, 8426, 13673, 16852, 27346, 43279, 46343, 54692, 86558, 92686, 173116, 185372, 476069, 952138, 1904276, 5236759, 10473518, 20947036]

約数ペア:

[(1, 20947036), (2, 10473518), (4, 5236759), (11, 1904276), (22, 952138), (44, 476069), (113, 185372), (121, 173116), (226, 92686), (242, 86558), (383, 54692), (452, 46343), (484, 43279), (766, 27346), (1243, 16852), (1532, 13673), (2486, 8426), (4213, 4972)]