642650640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{4051}}^1$

素因数の和:4728

約数の個数: 80

約数和(自身を含む): 1995723456

約数和(自身を除く): 1353072816

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 661, 1322, 1983, 2644, 3305, 3966, 4051, 5288, 6610, 7932, 8102, 9915, 10576, 12153, 13220, 15864, 16204, 19830, 20255, 24306, 26440, 31728, 32408, 39660, 40510, 48612, 52880, 60765, 64816, 79320, 81020, 97224, 121530, 158640, 162040, 194448, 243060, 324080, 486120, 972240, 2677711, 5355422, 8033133, 10710844, 13388555, 16066266, 21421688, 26777110, 32132532, 40165665, 42843376, 53554220, 64265064, 80331330, 107108440, 128530128, 160662660, 214216880, 321325320, 642650640]

約数ペア:

[(1, 642650640), (2, 321325320), (3, 214216880), (4, 160662660), (5, 128530128), (6, 107108440), (8, 80331330), (10, 64265064), (12, 53554220), (15, 42843376), (16, 40165665), (20, 32132532), (24, 26777110), (30, 21421688), (40, 16066266), (48, 13388555), (60, 10710844), (80, 8033133), (120, 5355422), (240, 2677711), (661, 972240), (1322, 486120), (1983, 324080), (2644, 243060), (3305, 194448), (3966, 162040), (4051, 158640), (5288, 121530), (6610, 97224), (7932, 81020), (8102, 79320), (9915, 64816), (10576, 60765), (12153, 52880), (13220, 48612), (15864, 40510), (16204, 39660), (19830, 32408), (20255, 31728), (24306, 26440)]