21102085

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1303}}^1$

素因数の和:1428

約数の個数: 16

約数和(自身を含む): 26288640

約数和(自身を除く): 5186555

約数列:

[1, 5, 41, 79, 205, 395, 1303, 3239, 6515, 16195, 53423, 102937, 267115, 514685, 4220417, 21102085]

約数ペア:

[(1, 21102085), (5, 4220417), (41, 514685), (79, 267115), (205, 102937), (395, 53423), (1303, 16195), (3239, 6515)]