21103970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2887}}^1$

素因数の和:2954

約数の個数: 32

約数和(自身を含む): 41171328

約数和(自身を除く): 20067358

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 2887, 3655, 5774, 7310, 14435, 28870, 49079, 98158, 124141, 245395, 248282, 490790, 620705, 1241410, 2110397, 4220794, 10551985, 21103970]

約数ペア:

[(1, 21103970), (2, 10551985), (5, 4220794), (10, 2110397), (17, 1241410), (34, 620705), (43, 490790), (85, 248282), (86, 245395), (170, 124141), (215, 98158), (430, 49079), (731, 28870), (1462, 14435), (2887, 7310), (3655, 5774)]