21610813

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 26659584

約数和(自身を除く): 5048771

約数列:

[1, 7, 31, 41, 49, 217, 287, 347, 1271, 1519, 2009, 2429, 8897, 10757, 14227, 17003, 62279, 75299, 99589, 441037, 527093, 697123, 3087259, 21610813]

約数ペア:

[(1, 21610813), (7, 3087259), (31, 697123), (41, 527093), (49, 441037), (217, 99589), (287, 75299), (347, 62279), (1271, 17003), (1519, 14227), (2009, 10757), (2429, 8897)]