28292121

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 51386400

約数和(自身を除く): 23094279

約数列:

[1, 3, 9, 11, 13, 19, 33, 39, 57, 89, 99, 117, 143, 169, 171, 209, 247, 267, 429, 507, 627, 741, 801, 979, 1157, 1287, 1521, 1691, 1859, 1881, 2223, 2717, 2937, 3211, 3471, 5073, 5577, 8151, 8811, 9633, 10413, 12727, 15041, 15219, 16731, 18601, 21983, 24453, 28899, 35321, 38181, 45123, 55803, 65949, 105963, 114543, 135369, 165451, 167409, 197847, 241813, 285779, 317889, 496353, 725439, 857337, 1489059, 2176317, 2572011, 3143569, 9430707, 28292121]

約数ペア:

[(1, 28292121), (3, 9430707), (9, 3143569), (11, 2572011), (13, 2176317), (19, 1489059), (33, 857337), (39, 725439), (57, 496353), (89, 317889), (99, 285779), (117, 241813), (143, 197847), (169, 167409), (171, 165451), (209, 135369), (247, 114543), (267, 105963), (429, 65949), (507, 55803), (627, 45123), (741, 38181), (801, 35321), (979, 28899), (1157, 24453), (1287, 21983), (1521, 18601), (1691, 16731), (1859, 15219), (1881, 15041), (2223, 12727), (2717, 10413), (2937, 9633), (3211, 8811), (3471, 8151), (5073, 5577)]