20646496

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1655

約数の個数: 48

約数和(自身を含む): 45214848

約数和(自身を除く): 24568352

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 104, 124, 208, 248, 403, 416, 496, 806, 992, 1601, 1612, 3202, 3224, 6404, 6448, 12808, 12896, 20813, 25616, 41626, 49631, 51232, 83252, 99262, 166504, 198524, 333008, 397048, 645203, 666016, 794096, 1290406, 1588192, 2580812, 5161624, 10323248, 20646496]

約数ペア:

[(1, 20646496), (2, 10323248), (4, 5161624), (8, 2580812), (13, 1588192), (16, 1290406), (26, 794096), (31, 666016), (32, 645203), (52, 397048), (62, 333008), (104, 198524), (124, 166504), (208, 99262), (248, 83252), (403, 51232), (416, 49631), (496, 41626), (806, 25616), (992, 20813), (1601, 12896), (1612, 12808), (3202, 6448), (3224, 6404)]