20990326

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11273}}^1$

素因数の和:11308

約数の個数: 24

約数和(自身を含む): 38557080

約数和(自身を除く): 17566754

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11273, 22546, 78911, 157822, 214187, 428374, 552377, 1104754, 1499309, 2998618, 10495163, 20990326]

約数ペア:

[(1, 20990326), (2, 10495163), (7, 2998618), (14, 1499309), (19, 1104754), (38, 552377), (49, 428374), (98, 214187), (133, 157822), (266, 78911), (931, 22546), (1862, 11273)]