20585984

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1297}}^1$

素因数の和:1346

約数の個数: 40

約数和(自身を含む): 42491328

約数和(自身を除く): 21905344

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1297, 1984, 2594, 3968, 5188, 7936, 10376, 15872, 20752, 40207, 41504, 80414, 83008, 160828, 166016, 321656, 332032, 643312, 664064, 1286624, 2573248, 5146496, 10292992, 20585984]

約数ペア:

[(1, 20585984), (2, 10292992), (4, 5146496), (8, 2573248), (16, 1286624), (31, 664064), (32, 643312), (62, 332032), (64, 321656), (124, 166016), (128, 160828), (248, 83008), (256, 80414), (496, 41504), (512, 40207), (992, 20752), (1297, 15872), (1984, 10376), (2594, 7936), (3968, 5188)]