21235417

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3217}}^1$

素因数の和:3288

約数の個数: 16

約数和(自身を含む): 25949952

約数和(自身を除く): 4714535

約数列:

[1, 7, 23, 41, 161, 287, 943, 3217, 6601, 22519, 73991, 131897, 517937, 923279, 3033631, 21235417]

約数ペア:

[(1, 21235417), (7, 3033631), (23, 923279), (41, 517937), (161, 131897), (287, 73991), (943, 22519), (3217, 6601)]