21213605

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{14783}}^1$

素因数の和:14836

約数の個数: 16

約数和(自身を含む): 29804544

約数和(自身を除く): 8590939

約数列:

[1, 5, 7, 35, 41, 205, 287, 1435, 14783, 73915, 103481, 517405, 606103, 3030515, 4242721, 21213605]

約数ペア:

[(1, 21213605), (5, 4242721), (7, 3030515), (35, 606103), (41, 517405), (205, 103481), (287, 73915), (1435, 14783)]