20950016

素因数分解:

$2^{10}\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:560

約数の個数: 44

約数和(自身を含む): 42987000

約数和(自身を除く): 22036984

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 256, 328, 499, 512, 656, 998, 1024, 1312, 1996, 2624, 3992, 5248, 7984, 10496, 15968, 20459, 20992, 31936, 40918, 41984, 63872, 81836, 127744, 163672, 255488, 327344, 510976, 654688, 1309376, 2618752, 5237504, 10475008, 20950016]

約数ペア:

[(1, 20950016), (2, 10475008), (4, 5237504), (8, 2618752), (16, 1309376), (32, 654688), (41, 510976), (64, 327344), (82, 255488), (128, 163672), (164, 127744), (256, 81836), (328, 63872), (499, 41984), (512, 40918), (656, 31936), (998, 20992), (1024, 20459), (1312, 15968), (1996, 10496), (2624, 7984), (3992, 5248)]