19807907

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 5536093

約数列:

[1, 7, 17, 43, 49, 79, 119, 301, 343, 553, 731, 833, 1343, 2107, 3397, 3871, 5117, 5831, 9401, 14749, 23779, 27097, 35819, 57749, 65807, 166453, 250733, 404243, 460649, 1165171, 2829701, 19807907]

約数ペア:

[(1, 19807907), (7, 2829701), (17, 1165171), (43, 460649), (49, 404243), (79, 250733), (119, 166453), (301, 65807), (343, 57749), (553, 35819), (731, 27097), (833, 23779), (1343, 14749), (2107, 9401), (3397, 5831), (3871, 5117)]