20490752

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1340

約数の個数: 40

約数和(自身を含む): 42294912

約数和(自身を除く): 21804160

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1291, 1984, 2582, 3968, 5164, 7936, 10328, 15872, 20656, 40021, 41312, 80042, 82624, 160084, 165248, 320168, 330496, 640336, 660992, 1280672, 2561344, 5122688, 10245376, 20490752]

約数ペア:

[(1, 20490752), (2, 10245376), (4, 5122688), (8, 2561344), (16, 1280672), (31, 660992), (32, 640336), (62, 330496), (64, 320168), (124, 165248), (128, 160084), (248, 82624), (256, 80042), (496, 41312), (512, 40021), (992, 20656), (1291, 15872), (1984, 10328), (2582, 7936), (3968, 5164)]