21505036

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40423}}^1$

素因数の和:40453

約数の個数: 24

約数和(自身を含む): 45274880

約数和(自身を除く): 23769844

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40423, 80846, 161692, 282961, 565922, 768037, 1131844, 1536074, 3072148, 5376259, 10752518, 21505036]

約数ペア:

[(1, 21505036), (2, 10752518), (4, 5376259), (7, 3072148), (14, 1536074), (19, 1131844), (28, 768037), (38, 565922), (76, 282961), (133, 161692), (266, 80846), (532, 40423)]