19964157080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{174329}}^1$

素因数の和:174756

約数の個数: 64

約数和(自身を含む): 51462216000

約数和(自身を除く): 31498058920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 409, 818, 1636, 2045, 2863, 3272, 4090, 5726, 8180, 11452, 14315, 16360, 22904, 28630, 57260, 114520, 174329, 348658, 697316, 871645, 1220303, 1394632, 1743290, 2440606, 3486580, 4881212, 6101515, 6973160, 9762424, 12203030, 24406060, 48812120, 71300561, 142601122, 285202244, 356502805, 499103927, 570404488, 713005610, 998207854, 1426011220, 1996415708, 2495519635, 2852022440, 3992831416, 4991039270, 9982078540, 19964157080]

約数ペア:

[(1, 19964157080), (2, 9982078540), (4, 4991039270), (5, 3992831416), (7, 2852022440), (8, 2495519635), (10, 1996415708), (14, 1426011220), (20, 998207854), (28, 713005610), (35, 570404488), (40, 499103927), (56, 356502805), (70, 285202244), (140, 142601122), (280, 71300561), (409, 48812120), (818, 24406060), (1636, 12203030), (2045, 9762424), (2863, 6973160), (3272, 6101515), (4090, 4881212), (5726, 3486580), (8180, 2440606), (11452, 1743290), (14315, 1394632), (16360, 1220303), (22904, 871645), (28630, 697316), (57260, 348658), (114520, 174329)]