206720960

素因数分解:

$2^6\times 5^1\times {\mathrm{646003}}^1$

素因数の和:646020

約数の個数: 28

約数和(自身を含む): 492255048

約数和(自身を除く): 285534088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 646003, 1292006, 2584012, 3230015, 5168024, 6460030, 10336048, 12920060, 20672096, 25840120, 41344192, 51680240, 103360480, 206720960]

約数ペア:

[(1, 206720960), (2, 103360480), (4, 51680240), (5, 41344192), (8, 25840120), (10, 20672096), (16, 12920060), (20, 10336048), (32, 6460030), (40, 5168024), (64, 3230015), (80, 2584012), (160, 1292006), (320, 646003)]