20654060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4759}}^1$

素因数の和:4806

約数の個数: 48

約数和(自身を含む): 51179520

約数和(自身を除く): 30525460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4759, 9518, 19036, 23795, 33313, 47590, 66626, 95180, 133252, 147529, 166565, 295058, 333130, 590116, 666260, 737645, 1032703, 1475290, 2065406, 2950580, 4130812, 5163515, 10327030, 20654060]

約数ペア:

[(1, 20654060), (2, 10327030), (4, 5163515), (5, 4130812), (7, 2950580), (10, 2065406), (14, 1475290), (20, 1032703), (28, 737645), (31, 666260), (35, 590116), (62, 333130), (70, 295058), (124, 166565), (140, 147529), (155, 133252), (217, 95180), (310, 66626), (434, 47590), (620, 33313), (868, 23795), (1085, 19036), (2170, 9518), (4340, 4759)]