21340390

素因数分解:

$2^1\times 5^1\times {\mathrm{823}}^1\times {\mathrm{2593}}^1$

素因数の和:3423

約数の個数: 16

約数和(自身を含む): 38474208

約数和(自身を除く): 17133818

約数列:

[1, 2, 5, 10, 823, 1646, 2593, 4115, 5186, 8230, 12965, 25930, 2134039, 4268078, 10670195, 21340390]

約数ペア:

[(1, 21340390), (2, 10670195), (5, 4268078), (10, 2134039), (823, 25930), (1646, 12965), (2593, 8230), (4115, 5186)]