20051220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47741}}^1$

素因数の和:47760

約数の個数: 48

約数和(自身を含む): 64165248

約数和(自身を除く): 44114028

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, 47741, 95482, 143223, 190964, 238705, 286446, 334187, 477410, 572892, 668374, 716115, 954820, 1002561, 1336748, 1432230, 1670935, 2005122, 2864460, 3341870, 4010244, 5012805, 6683740, 10025610, 20051220]

約数ペア:

[(1, 20051220), (2, 10025610), (3, 6683740), (4, 5012805), (5, 4010244), (6, 3341870), (7, 2864460), (10, 2005122), (12, 1670935), (14, 1432230), (15, 1336748), (20, 1002561), (21, 954820), (28, 716115), (30, 668374), (35, 572892), (42, 477410), (60, 334187), (70, 286446), (84, 238705), (105, 190964), (140, 143223), (210, 95482), (420, 47741)]