19690461

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 34504704

約数和(自身を除く): 14814243

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 107, 127, 161, 207, 321, 381, 483, 749, 889, 963, 1143, 1449, 2247, 2461, 2667, 2921, 6741, 7383, 8001, 8763, 13589, 17227, 20447, 22149, 26289, 40767, 51681, 61341, 95123, 122301, 155043, 184023, 285369, 312547, 856107, 937641, 2187829, 2812923, 6563487, 19690461]

約数ペア:

[(1, 19690461), (3, 6563487), (7, 2812923), (9, 2187829), (21, 937641), (23, 856107), (63, 312547), (69, 285369), (107, 184023), (127, 155043), (161, 122301), (207, 95123), (321, 61341), (381, 51681), (483, 40767), (749, 26289), (889, 22149), (963, 20447), (1143, 17227), (1449, 13589), (2247, 8763), (2461, 8001), (2667, 7383), (2921, 6741)]