21960509090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168926993}}^1$

素因数の和:168927013

約数の個数: 16

約数和(自身を含む): 42569602488

約数和(自身を除く): 20609093398

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168926993, 337853986, 844634965, 1689269930, 2196050909, 4392101818, 10980254545, 21960509090]

約数ペア:

[(1, 21960509090), (2, 10980254545), (5, 4392101818), (10, 2196050909), (13, 1689269930), (26, 844634965), (65, 337853986), (130, 168926993)]