21034167

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 37822464

約数和(自身を除く): 16788297

約数列:

[1, 3, 7, 11, 21, 23, 33, 37, 69, 77, 107, 111, 161, 231, 253, 259, 321, 407, 483, 749, 759, 777, 851, 1177, 1221, 1771, 2247, 2461, 2553, 2849, 3531, 3959, 5313, 5957, 7383, 8239, 8547, 9361, 11877, 17227, 17871, 24717, 27071, 27713, 28083, 43549, 51681, 65527, 81213, 83139, 91057, 130647, 189497, 196581, 273171, 304843, 568491, 637399, 914529, 1001627, 1912197, 3004881, 7011389, 21034167]

約数ペア:

[(1, 21034167), (3, 7011389), (7, 3004881), (11, 1912197), (21, 1001627), (23, 914529), (33, 637399), (37, 568491), (69, 304843), (77, 273171), (107, 196581), (111, 189497), (161, 130647), (231, 91057), (253, 83139), (259, 81213), (321, 65527), (407, 51681), (483, 43549), (749, 28083), (759, 27713), (777, 27071), (851, 24717), (1177, 17871), (1221, 17227), (1771, 11877), (2247, 9361), (2461, 8547), (2553, 8239), (2849, 7383), (3531, 5957), (3959, 5313)]