21000604828

素因数分解:

$2^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1203887}}^1$

素因数の和:1203994

約数の個数: 36

約数和(自身を含む): 43231618080

約数和(自身を除く): 22231013252

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 356, 623, 1246, 2492, 4361, 8722, 17444, 1203887, 2407774, 4815548, 8427209, 16854418, 33708836, 58990463, 107145943, 117980926, 214291886, 235961852, 428583772, 750021601, 1500043202, 3000086404, 5250151207, 10500302414, 21000604828]

約数ペア:

[(1, 21000604828), (2, 10500302414), (4, 5250151207), (7, 3000086404), (14, 1500043202), (28, 750021601), (49, 428583772), (89, 235961852), (98, 214291886), (178, 117980926), (196, 107145943), (356, 58990463), (623, 33708836), (1246, 16854418), (2492, 8427209), (4361, 4815548), (8722, 2407774), (17444, 1203887)]