20185209940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{106721}}^1$

素因数の和:106937

約数の個数: 72

約数和(自身を含む): 49565538792

約数和(自身を除く): 29380328852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 193, 196, 245, 386, 490, 772, 965, 980, 1351, 1930, 2702, 3860, 5404, 6755, 9457, 13510, 18914, 27020, 37828, 47285, 94570, 106721, 189140, 213442, 426884, 533605, 747047, 1067210, 1494094, 2134420, 2988188, 3735235, 5229329, 7470470, 10458658, 14940940, 20597153, 20917316, 26146645, 41194306, 52293290, 82388612, 102985765, 104586580, 144180071, 205971530, 288360142, 411943060, 576720284, 720900355, 1009260497, 1441800710, 2018520994, 2883601420, 4037041988, 5046302485, 10092604970, 20185209940]

約数ペア:

[(1, 20185209940), (2, 10092604970), (4, 5046302485), (5, 4037041988), (7, 2883601420), (10, 2018520994), (14, 1441800710), (20, 1009260497), (28, 720900355), (35, 576720284), (49, 411943060), (70, 288360142), (98, 205971530), (140, 144180071), (193, 104586580), (196, 102985765), (245, 82388612), (386, 52293290), (490, 41194306), (772, 26146645), (965, 20917316), (980, 20597153), (1351, 14940940), (1930, 10458658), (2702, 7470470), (3860, 5229329), (5404, 3735235), (6755, 2988188), (9457, 2134420), (13510, 1494094), (18914, 1067210), (27020, 747047), (37828, 533605), (47285, 426884), (94570, 213442), (106721, 189140)]