20658148

素因数分解:

$2^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1151}}^1$

素因数の和:1803

約数の個数: 24

約数和(自身を含む): 41416704

約数和(自身を除く): 20758556

約数列:

[1, 2, 4, 7, 14, 28, 641, 1151, 1282, 2302, 2564, 4487, 4604, 8057, 8974, 16114, 17948, 32228, 737791, 1475582, 2951164, 5164537, 10329074, 20658148]

約数ペア:

[(1, 20658148), (2, 10329074), (4, 5164537), (7, 2951164), (14, 1475582), (28, 737791), (641, 32228), (1151, 17948), (1282, 16114), (2302, 8974), (2564, 8057), (4487, 4604)]