20343260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{439}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 49082880

約数和(自身を除く): 28739620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 331, 439, 662, 878, 1324, 1655, 1756, 2195, 2317, 3073, 3310, 4390, 4634, 6146, 6620, 8780, 9268, 11585, 12292, 15365, 23170, 30730, 46340, 61460, 145309, 290618, 581236, 726545, 1017163, 1453090, 2034326, 2906180, 4068652, 5085815, 10171630, 20343260]

約数ペア:

[(1, 20343260), (2, 10171630), (4, 5085815), (5, 4068652), (7, 2906180), (10, 2034326), (14, 1453090), (20, 1017163), (28, 726545), (35, 581236), (70, 290618), (140, 145309), (331, 61460), (439, 46340), (662, 30730), (878, 23170), (1324, 15365), (1655, 12292), (1756, 11585), (2195, 9268), (2317, 8780), (3073, 6620), (3310, 6146), (4390, 4634)]