20949370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161149}}^1$

素因数の和:161169

約数の個数: 16

約数和(自身を含む): 40609800

約数和(自身を除く): 19660430

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161149, 322298, 805745, 1611490, 2094937, 4189874, 10474685, 20949370]

約数ペア:

[(1, 20949370), (2, 10474685), (5, 4189874), (10, 2094937), (13, 1611490), (26, 805745), (65, 322298), (130, 161149)]