20832920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12703}}^1$

素因数の和:12755

約数の個数: 32

約数和(自身を含む): 48021120

約数和(自身を除く): 27188200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12703, 25406, 50812, 63515, 101624, 127030, 254060, 508120, 520823, 1041646, 2083292, 2604115, 4166584, 5208230, 10416460, 20832920]

約数ペア:

[(1, 20832920), (2, 10416460), (4, 5208230), (5, 4166584), (8, 2604115), (10, 2083292), (20, 1041646), (40, 520823), (41, 508120), (82, 254060), (164, 127030), (205, 101624), (328, 63515), (410, 50812), (820, 25406), (1640, 12703)]