205428380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{1549}}^1$

素因数の和:1926

約数の個数: 48

約数和(自身を含む): 455700000

約数和(自身を除く): 250271620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 349, 380, 698, 1396, 1549, 1745, 3098, 3490, 6196, 6631, 6980, 7745, 13262, 15490, 26524, 29431, 30980, 33155, 58862, 66310, 117724, 132620, 147155, 294310, 540601, 588620, 1081202, 2162404, 2703005, 5406010, 10271419, 10812020, 20542838, 41085676, 51357095, 102714190, 205428380]

約数ペア:

[(1, 205428380), (2, 102714190), (4, 51357095), (5, 41085676), (10, 20542838), (19, 10812020), (20, 10271419), (38, 5406010), (76, 2703005), (95, 2162404), (190, 1081202), (349, 588620), (380, 540601), (698, 294310), (1396, 147155), (1549, 132620), (1745, 117724), (3098, 66310), (3490, 58862), (6196, 33155), (6631, 30980), (6980, 29431), (7745, 26524), (13262, 15490)]