164038940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{630919}}^1$

素因数の和:630941

約数の個数: 24

約数和(自身を含む): 370980960

約数和(自身を除く): 206942020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 630919, 1261838, 2523676, 3154595, 6309190, 8201947, 12618380, 16403894, 32807788, 41009735, 82019470, 164038940]

約数ペア:

[(1, 164038940), (2, 82019470), (4, 41009735), (5, 32807788), (10, 16403894), (13, 12618380), (20, 8201947), (26, 6309190), (52, 3154595), (65, 2523676), (130, 1261838), (260, 630919)]