21991620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52361}}^1$

素因数の和:52380

約数の個数: 48

約数和(自身を含む): 70374528

約数和(自身を除く): 48382908

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, 52361, 104722, 157083, 209444, 261805, 314166, 366527, 523610, 628332, 733054, 785415, 1047220, 1099581, 1466108, 1570830, 1832635, 2199162, 3141660, 3665270, 4398324, 5497905, 7330540, 10995810, 21991620]

約数ペア:

[(1, 21991620), (2, 10995810), (3, 7330540), (4, 5497905), (5, 4398324), (6, 3665270), (7, 3141660), (10, 2199162), (12, 1832635), (14, 1570830), (15, 1466108), (20, 1099581), (21, 1047220), (28, 785415), (30, 733054), (35, 628332), (42, 523610), (60, 366527), (70, 314166), (84, 261805), (105, 209444), (140, 157083), (210, 104722), (420, 52361)]