81644638

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:568

約数の個数: 24

約数和(自身を含む): 128049336

約数和(自身を除く): 46404698

約数列:

[1, 2, 31, 62, 107, 214, 397, 794, 961, 1922, 3317, 6634, 12307, 24614, 42479, 84958, 102827, 205654, 381517, 763034, 1316849, 2633698, 40822319, 81644638]

約数ペア:

[(1, 81644638), (2, 40822319), (31, 2633698), (62, 1316849), (107, 763034), (214, 381517), (397, 205654), (794, 102827), (961, 84958), (1922, 42479), (3317, 24614), (6634, 12307)]