257522660

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{839}}^1$

素因数の和:1100

約数の個数: 48

約数和(自身を含む): 550368000

約数和(自身を除く): 292845340

約数列:

[1, 2, 4, 5, 10, 20, 103, 149, 206, 298, 412, 515, 596, 745, 839, 1030, 1490, 1678, 2060, 2980, 3356, 4195, 8390, 15347, 16780, 30694, 61388, 76735, 86417, 125011, 153470, 172834, 250022, 306940, 345668, 432085, 500044, 625055, 864170, 1250110, 1728340, 2500220, 12876133, 25752266, 51504532, 64380665, 128761330, 257522660]

約数ペア:

[(1, 257522660), (2, 128761330), (4, 64380665), (5, 51504532), (10, 25752266), (20, 12876133), (103, 2500220), (149, 1728340), (206, 1250110), (298, 864170), (412, 625055), (515, 500044), (596, 432085), (745, 345668), (839, 306940), (1030, 250022), (1490, 172834), (1678, 153470), (2060, 125011), (2980, 86417), (3356, 76735), (4195, 61388), (8390, 30694), (15347, 16780)]