20045060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2137}}^1$

素因数の和:2220

約数の個数: 48

約数和(自身を含む): 48849024

約数和(自身を除く): 28803964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2137, 2345, 4274, 4690, 8548, 9380, 10685, 14959, 21370, 29918, 42740, 59836, 74795, 143179, 149590, 286358, 299180, 572716, 715895, 1002253, 1431790, 2004506, 2863580, 4009012, 5011265, 10022530, 20045060]

約数ペア:

[(1, 20045060), (2, 10022530), (4, 5011265), (5, 4009012), (7, 2863580), (10, 2004506), (14, 1431790), (20, 1002253), (28, 715895), (35, 572716), (67, 299180), (70, 286358), (134, 149590), (140, 143179), (268, 74795), (335, 59836), (469, 42740), (670, 29918), (938, 21370), (1340, 14959), (1876, 10685), (2137, 9380), (2345, 8548), (4274, 4690)]