12902140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1787}}^1$

素因数の和:1834

約数の個数: 36

約数和(自身を含む): 28611576

約数和(自身を除く): 15709436

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1787, 1805, 3574, 3610, 7148, 7220, 8935, 17870, 33953, 35740, 67906, 135812, 169765, 339530, 645107, 679060, 1290214, 2580428, 3225535, 6451070, 12902140]

約数ペア:

[(1, 12902140), (2, 6451070), (4, 3225535), (5, 2580428), (10, 1290214), (19, 679060), (20, 645107), (38, 339530), (76, 169765), (95, 135812), (190, 67906), (361, 35740), (380, 33953), (722, 17870), (1444, 8935), (1787, 7220), (1805, 7148), (3574, 3610)]