21304085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2239}}^1$

素因数の和:2428

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 6758635

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2239, 9515, 11195, 24629, 123145, 387347, 1936735, 4260817, 21304085]

約数ペア:

[(1, 21304085), (5, 4260817), (11, 1936735), (55, 387347), (173, 123145), (865, 24629), (1903, 11195), (2239, 9515)]