28158620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1447}}^1$

素因数の和:1602

約数の個数: 48

約数和(自身を含む): 68113920

約数和(自身を除く): 39955300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1447, 1946, 2780, 2894, 3892, 4865, 5788, 7235, 9730, 10129, 14470, 19460, 20258, 28940, 40516, 50645, 101290, 201133, 202580, 402266, 804532, 1005665, 1407931, 2011330, 2815862, 4022660, 5631724, 7039655, 14079310, 28158620]

約数ペア:

[(1, 28158620), (2, 14079310), (4, 7039655), (5, 5631724), (7, 4022660), (10, 2815862), (14, 2011330), (20, 1407931), (28, 1005665), (35, 804532), (70, 402266), (139, 202580), (140, 201133), (278, 101290), (556, 50645), (695, 40516), (973, 28940), (1390, 20258), (1447, 19460), (1946, 14470), (2780, 10129), (2894, 9730), (3892, 7235), (4865, 5788)]