21151060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8887}}^1$

素因数の和:8920

約数の個数: 48

約数和(自身を含む): 53754624

約数和(自身を除く): 32603564

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8887, 17774, 35548, 44435, 62209, 88870, 124418, 151079, 177740, 248836, 302158, 311045, 604316, 622090, 755395, 1057553, 1244180, 1510790, 2115106, 3021580, 4230212, 5287765, 10575530, 21151060]

約数ペア:

[(1, 21151060), (2, 10575530), (4, 5287765), (5, 4230212), (7, 3021580), (10, 2115106), (14, 1510790), (17, 1244180), (20, 1057553), (28, 755395), (34, 622090), (35, 604316), (68, 311045), (70, 302158), (85, 248836), (119, 177740), (140, 151079), (170, 124418), (238, 88870), (340, 62209), (476, 44435), (595, 35548), (1190, 17774), (2380, 8887)]