20752580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{911}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 46884096

約数和(自身を除く): 26131516

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 911, 1139, 1340, 1822, 2278, 3644, 4555, 4556, 5695, 9110, 11390, 15487, 18220, 22780, 30974, 61037, 61948, 77435, 122074, 154870, 244148, 305185, 309740, 610370, 1037629, 1220740, 2075258, 4150516, 5188145, 10376290, 20752580]

約数ペア:

[(1, 20752580), (2, 10376290), (4, 5188145), (5, 4150516), (10, 2075258), (17, 1220740), (20, 1037629), (34, 610370), (67, 309740), (68, 305185), (85, 244148), (134, 154870), (170, 122074), (268, 77435), (335, 61948), (340, 61037), (670, 30974), (911, 22780), (1139, 18220), (1340, 15487), (1822, 11390), (2278, 9110), (3644, 5695), (4555, 4556)]