21127085

素因数分解:

$5^1\times 7^3\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:250

約数の個数: 32

約数和(自身を含む): 30105600

約数和(自身を除く): 8978515

約数列:

[1, 5, 7, 35, 49, 97, 127, 245, 343, 485, 635, 679, 889, 1715, 3395, 4445, 4753, 6223, 12319, 23765, 31115, 33271, 43561, 61595, 86233, 166355, 217805, 431165, 603631, 3018155, 4225417, 21127085]

約数ペア:

[(1, 21127085), (5, 4225417), (7, 3018155), (35, 603631), (49, 431165), (97, 217805), (127, 166355), (245, 86233), (343, 61595), (485, 43561), (635, 33271), (679, 31115), (889, 23765), (1715, 12319), (3395, 6223), (4445, 4753)]