404647620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{518779}}^1$

素因数の和:518804

約数の個数: 48

約数和(自身を含む): 1220170560

約数和(自身を除く): 815522940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 518779, 1037558, 1556337, 2075116, 2593895, 3112674, 5187790, 6225348, 6744127, 7781685, 10375580, 13488254, 15563370, 20232381, 26976508, 31126740, 33720635, 40464762, 67441270, 80929524, 101161905, 134882540, 202323810, 404647620]

約数ペア:

[(1, 404647620), (2, 202323810), (3, 134882540), (4, 101161905), (5, 80929524), (6, 67441270), (10, 40464762), (12, 33720635), (13, 31126740), (15, 26976508), (20, 20232381), (26, 15563370), (30, 13488254), (39, 10375580), (52, 7781685), (60, 6744127), (65, 6225348), (78, 5187790), (130, 3112674), (156, 2593895), (195, 2075116), (260, 1556337), (390, 1037558), (780, 518779)]