20279870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{607}}^1$

素因数の和:884

約数の個数: 32

約数和(自身を含む): 39529728

約数和(自身を除く): 19249858

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 257, 514, 607, 1214, 1285, 2570, 3035, 3341, 6070, 6682, 7891, 15782, 16705, 33410, 39455, 78910, 155999, 311998, 779995, 1559990, 2027987, 4055974, 10139935, 20279870]

約数ペア:

[(1, 20279870), (2, 10139935), (5, 4055974), (10, 2027987), (13, 1559990), (26, 779995), (65, 311998), (130, 155999), (257, 78910), (514, 39455), (607, 33410), (1214, 16705), (1285, 15782), (2570, 7891), (3035, 6682), (3341, 6070)]