2506840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1279}}^1$

素因数の和:1304

約数の個数: 48

約数和(自身を含む): 6566400

約数和(自身を除く): 4059560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1279, 1960, 2558, 5116, 6395, 8953, 10232, 12790, 17906, 25580, 35812, 44765, 51160, 62671, 71624, 89530, 125342, 179060, 250684, 313355, 358120, 501368, 626710, 1253420, 2506840]

約数ペア:

[(1, 2506840), (2, 1253420), (4, 626710), (5, 501368), (7, 358120), (8, 313355), (10, 250684), (14, 179060), (20, 125342), (28, 89530), (35, 71624), (40, 62671), (49, 51160), (56, 44765), (70, 35812), (98, 25580), (140, 17906), (196, 12790), (245, 10232), (280, 8953), (392, 6395), (490, 5116), (980, 2558), (1279, 1960)]