21264790

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2909}}^1$

素因数の和:2976

約数の個数: 32

約数和(自身を含む): 41484960

約数和(自身を除く): 20220170

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 2909, 3655, 5818, 7310, 14545, 29090, 49453, 98906, 125087, 247265, 250174, 494530, 625435, 1250870, 2126479, 4252958, 10632395, 21264790]

約数ペア:

[(1, 21264790), (2, 10632395), (5, 4252958), (10, 2126479), (17, 1250870), (34, 625435), (43, 494530), (85, 250174), (86, 247265), (170, 125087), (215, 98906), (430, 49453), (731, 29090), (1462, 14545), (2909, 7310), (3655, 5818)]