28403955

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 52416000

約数和(自身を除く): 24012045

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 139, 171, 239, 285, 417, 695, 717, 855, 1195, 1251, 2085, 2151, 2641, 3585, 4541, 6255, 7923, 10755, 13205, 13623, 22705, 23769, 33221, 39615, 40869, 68115, 99663, 118845, 166105, 204345, 298989, 498315, 631199, 1494945, 1893597, 3155995, 5680791, 9467985, 28403955]

約数ペア:

[(1, 28403955), (3, 9467985), (5, 5680791), (9, 3155995), (15, 1893597), (19, 1494945), (45, 631199), (57, 498315), (95, 298989), (139, 204345), (171, 166105), (239, 118845), (285, 99663), (417, 68115), (695, 40869), (717, 39615), (855, 33221), (1195, 23769), (1251, 22705), (2085, 13623), (2151, 13205), (2641, 10755), (3585, 7923), (4541, 6255)]