20519884

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3919}}^1$

素因数の和:3958

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 26896436

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 3919, 5236, 7838, 15676, 27433, 43109, 54866, 66623, 86218, 109732, 133246, 172436, 266492, 301763, 466361, 603526, 732853, 932722, 1207052, 1465706, 1865444, 2931412, 5129971, 10259942, 20519884]

約数ペア:

[(1, 20519884), (2, 10259942), (4, 5129971), (7, 2931412), (11, 1865444), (14, 1465706), (17, 1207052), (22, 932722), (28, 732853), (34, 603526), (44, 466361), (68, 301763), (77, 266492), (119, 172436), (154, 133246), (187, 109732), (238, 86218), (308, 66623), (374, 54866), (476, 43109), (748, 27433), (1309, 15676), (2618, 7838), (3919, 5236)]