19794256

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1193}}^1$

素因数の和:1279

約数の個数: 40

約数和(自身を含む): 41307624

約数和(自身を除く): 21513368

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 122, 136, 244, 272, 488, 976, 1037, 1193, 2074, 2386, 4148, 4772, 8296, 9544, 16592, 19088, 20281, 40562, 72773, 81124, 145546, 162248, 291092, 324496, 582184, 1164368, 1237141, 2474282, 4948564, 9897128, 19794256]

約数ペア:

[(1, 19794256), (2, 9897128), (4, 4948564), (8, 2474282), (16, 1237141), (17, 1164368), (34, 582184), (61, 324496), (68, 291092), (122, 162248), (136, 145546), (244, 81124), (272, 72773), (488, 40562), (976, 20281), (1037, 19088), (1193, 16592), (2074, 9544), (2386, 8296), (4148, 4772)]