21495812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2633}}^1$

素因数の和:2807

約数の個数: 24

約数和(自身を含む): 40784856

約数和(自身を除く): 19289044

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2633, 4082, 5266, 8164, 10532, 34229, 68458, 136916, 413381, 826762, 1653524, 5373953, 10747906, 21495812]

約数ペア:

[(1, 21495812), (2, 10747906), (4, 5373953), (13, 1653524), (26, 826762), (52, 413381), (157, 136916), (314, 68458), (628, 34229), (2041, 10532), (2633, 8164), (4082, 5266)]