20184086920

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1027703}}^1$

素因数の和:1028205

約数の個数: 32

約数和(自身を含む): 45506733120

約数和(自身を除く): 25322646200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 19640, 1027703, 2055406, 4110812, 5138515, 8221624, 10277030, 20554060, 41108120, 504602173, 1009204346, 2018408692, 2523010865, 4036817384, 5046021730, 10092043460, 20184086920]

約数ペア:

[(1, 20184086920), (2, 10092043460), (4, 5046021730), (5, 4036817384), (8, 2523010865), (10, 2018408692), (20, 1009204346), (40, 504602173), (491, 41108120), (982, 20554060), (1964, 10277030), (2455, 8221624), (3928, 5138515), (4910, 4110812), (9820, 2055406), (19640, 1027703)]