21535787

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{13921}}^1$

素因数の和:13958

約数の個数: 16

約数和(自身を含む): 28066752

約数和(自身を除く): 6530965

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 13921, 97447, 180973, 236657, 1266811, 1656599, 3076541, 21535787]

約数ペア:

[(1, 21535787), (7, 3076541), (13, 1656599), (17, 1266811), (91, 236657), (119, 180973), (221, 97447), (1547, 13921)]