7998980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{353}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 18555264

約数和(自身を除く): 10556284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 353, 412, 515, 706, 1030, 1133, 1412, 1765, 2060, 2266, 3530, 3883, 4532, 5665, 7060, 7766, 11330, 15532, 19415, 22660, 36359, 38830, 72718, 77660, 145436, 181795, 363590, 399949, 727180, 799898, 1599796, 1999745, 3999490, 7998980]

約数ペア:

[(1, 7998980), (2, 3999490), (4, 1999745), (5, 1599796), (10, 799898), (11, 727180), (20, 399949), (22, 363590), (44, 181795), (55, 145436), (103, 77660), (110, 72718), (206, 38830), (220, 36359), (353, 22660), (412, 19415), (515, 15532), (706, 11330), (1030, 7766), (1133, 7060), (1412, 5665), (1765, 4532), (2060, 3883), (2266, 3530)]