21861063

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 17952057

約数列:

[1, 3, 7, 9, 21, 23, 27, 47, 63, 69, 107, 141, 161, 189, 207, 321, 329, 423, 483, 621, 749, 963, 987, 1081, 1269, 1449, 2247, 2461, 2889, 2961, 3243, 4347, 5029, 6741, 7383, 7567, 8883, 9729, 15087, 17227, 20223, 22149, 22701, 29187, 35203, 45261, 51681, 66447, 68103, 105609, 115667, 135783, 155043, 204309, 316827, 347001, 465129, 809669, 950481, 1041003, 2429007, 3123009, 7287021, 21861063]

約数ペア:

[(1, 21861063), (3, 7287021), (7, 3123009), (9, 2429007), (21, 1041003), (23, 950481), (27, 809669), (47, 465129), (63, 347001), (69, 316827), (107, 204309), (141, 155043), (161, 135783), (189, 115667), (207, 105609), (321, 68103), (329, 66447), (423, 51681), (483, 45261), (621, 35203), (749, 29187), (963, 22701), (987, 22149), (1081, 20223), (1269, 17227), (1449, 15087), (2247, 9729), (2461, 8883), (2889, 7567), (2961, 7383), (3243, 6741), (4347, 5029)]