28136380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 61740000

約数和(自身を除く): 33603620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 349, 556, 580, 695, 698, 1390, 1396, 1745, 2780, 3490, 4031, 6980, 8062, 10121, 16124, 20155, 20242, 40310, 40484, 48511, 50605, 80620, 97022, 101210, 194044, 202420, 242555, 485110, 970220, 1406819, 2813638, 5627276, 7034095, 14068190, 28136380]

約数ペア:

[(1, 28136380), (2, 14068190), (4, 7034095), (5, 5627276), (10, 2813638), (20, 1406819), (29, 970220), (58, 485110), (116, 242555), (139, 202420), (145, 194044), (278, 101210), (290, 97022), (349, 80620), (556, 50605), (580, 48511), (695, 40484), (698, 40310), (1390, 20242), (1396, 20155), (1745, 16124), (2780, 10121), (3490, 8062), (4031, 6980)]