249209660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1780069}}^1$

素因数の和:1780085

約数の個数: 24

約数和(自身を含む): 598103520

約数和(自身を除く): 348893860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1780069, 3560138, 7120276, 8900345, 12460483, 17800690, 24920966, 35601380, 49841932, 62302415, 124604830, 249209660]

約数ペア:

[(1, 249209660), (2, 124604830), (4, 62302415), (5, 49841932), (7, 35601380), (10, 24920966), (14, 17800690), (20, 12460483), (28, 8900345), (35, 7120276), (70, 3560138), (140, 1780069)]