20291425

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 31997952

約数和(自身を除く): 11706527

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 83, 127, 175, 275, 385, 415, 581, 635, 889, 913, 1397, 1925, 2075, 2905, 3175, 4445, 4565, 6391, 6985, 9779, 10541, 14525, 22225, 22825, 31955, 34925, 48895, 52705, 73787, 115951, 159775, 244475, 263525, 368935, 579755, 811657, 1844675, 2898775, 4058285, 20291425]

約数ペア:

[(1, 20291425), (5, 4058285), (7, 2898775), (11, 1844675), (25, 811657), (35, 579755), (55, 368935), (77, 263525), (83, 244475), (127, 159775), (175, 115951), (275, 73787), (385, 52705), (415, 48895), (581, 34925), (635, 31955), (889, 22825), (913, 22225), (1397, 14525), (1925, 10541), (2075, 9779), (2905, 6985), (3175, 6391), (4445, 4565)]