205254420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{488701}}^1$

素因数の和:488720

約数の個数: 48

約数和(自身を含む): 656815488

約数和(自身を除く): 451561068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 488701, 977402, 1466103, 1954804, 2443505, 2932206, 3420907, 4887010, 5864412, 6841814, 7330515, 9774020, 10262721, 13683628, 14661030, 17104535, 20525442, 29322060, 34209070, 41050884, 51313605, 68418140, 102627210, 205254420]

約数ペア:

[(1, 205254420), (2, 102627210), (3, 68418140), (4, 51313605), (5, 41050884), (6, 34209070), (7, 29322060), (10, 20525442), (12, 17104535), (14, 14661030), (15, 13683628), (20, 10262721), (21, 9774020), (28, 7330515), (30, 6841814), (35, 5864412), (42, 4887010), (60, 3420907), (70, 2932206), (84, 2443505), (105, 1954804), (140, 1466103), (210, 977402), (420, 488701)]