21588368

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:735

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23096272

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 139, 272, 278, 556, 571, 1112, 1142, 2224, 2284, 2363, 4568, 4726, 9136, 9452, 9707, 18904, 19414, 37808, 38828, 77656, 79369, 155312, 158738, 317476, 634952, 1269904, 1349273, 2698546, 5397092, 10794184, 21588368]

約数ペア:

[(1, 21588368), (2, 10794184), (4, 5397092), (8, 2698546), (16, 1349273), (17, 1269904), (34, 634952), (68, 317476), (136, 158738), (139, 155312), (272, 79369), (278, 77656), (556, 38828), (571, 37808), (1112, 19414), (1142, 18904), (2224, 9707), (2284, 9452), (2363, 9136), (4568, 4726)]