2505180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1026

約数の個数: 48

約数和(自身を含む): 7185024

約数和(自身を除く): 4679844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 971, 1290, 1942, 2580, 2913, 3884, 4855, 5826, 9710, 11652, 14565, 19420, 29130, 41753, 58260, 83506, 125259, 167012, 208765, 250518, 417530, 501036, 626295, 835060, 1252590, 2505180]

約数ペア:

[(1, 2505180), (2, 1252590), (3, 835060), (4, 626295), (5, 501036), (6, 417530), (10, 250518), (12, 208765), (15, 167012), (20, 125259), (30, 83506), (43, 58260), (60, 41753), (86, 29130), (129, 19420), (172, 14565), (215, 11652), (258, 9710), (430, 5826), (516, 4855), (645, 3884), (860, 2913), (971, 2580), (1290, 1942)]