20771008

素因数分解:

$2^6\times {\mathrm{17}}^2\times {\mathrm{1123}}^1$

素因数の和:1169

約数の個数: 42

約数和(自身を含む): 43823636

約数和(自身を除く): 23052628

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 136, 272, 289, 544, 578, 1088, 1123, 1156, 2246, 2312, 4492, 4624, 8984, 9248, 17968, 18496, 19091, 35936, 38182, 71872, 76364, 152728, 305456, 324547, 610912, 649094, 1221824, 1298188, 2596376, 5192752, 10385504, 20771008]

約数ペア:

[(1, 20771008), (2, 10385504), (4, 5192752), (8, 2596376), (16, 1298188), (17, 1221824), (32, 649094), (34, 610912), (64, 324547), (68, 305456), (136, 152728), (272, 76364), (289, 71872), (544, 38182), (578, 35936), (1088, 19091), (1123, 18496), (1156, 17968), (2246, 9248), (2312, 8984), (4492, 4624)]