512787580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{3469}}^1$

素因数の和:3886

約数の個数: 48

約数和(自身を含む): 1136772000

約数和(自身を除く): 623984420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 389, 778, 1556, 1945, 3469, 3890, 6938, 7391, 7780, 13876, 14782, 17345, 29564, 34690, 36955, 65911, 69380, 73910, 131822, 147820, 263644, 329555, 659110, 1318220, 1349441, 2698882, 5397764, 6747205, 13494410, 25639379, 26988820, 51278758, 102557516, 128196895, 256393790, 512787580]

約数ペア:

[(1, 512787580), (2, 256393790), (4, 128196895), (5, 102557516), (10, 51278758), (19, 26988820), (20, 25639379), (38, 13494410), (76, 6747205), (95, 5397764), (190, 2698882), (380, 1349441), (389, 1318220), (778, 659110), (1556, 329555), (1945, 263644), (3469, 147820), (3890, 131822), (6938, 73910), (7391, 69380), (7780, 65911), (13876, 36955), (14782, 34690), (17345, 29564)]