2500220

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{839}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 5292000

約数和(自身を除く): 2791780

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 839, 1490, 1678, 2980, 3356, 4195, 8390, 16780, 125011, 250022, 500044, 625055, 1250110, 2500220]

約数ペア:

[(1, 2500220), (2, 1250110), (4, 625055), (5, 500044), (10, 250022), (20, 125011), (149, 16780), (298, 8390), (596, 4195), (745, 3356), (839, 2980), (1490, 1678)]