21971968

素因数分解:

$2^{10}\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:562

約数の個数: 44

約数和(自身を含む): 45034000

約数和(自身を除く): 23062032

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 499, 512, 688, 998, 1024, 1376, 1996, 2752, 3992, 5504, 7984, 11008, 15968, 21457, 22016, 31936, 42914, 44032, 63872, 85828, 127744, 171656, 255488, 343312, 510976, 686624, 1373248, 2746496, 5492992, 10985984, 21971968]

約数ペア:

[(1, 21971968), (2, 10985984), (4, 5492992), (8, 2746496), (16, 1373248), (32, 686624), (43, 510976), (64, 343312), (86, 255488), (128, 171656), (172, 127744), (256, 85828), (344, 63872), (499, 44032), (512, 42914), (688, 31936), (998, 22016), (1024, 21457), (1376, 15968), (1996, 11008), (2752, 7984), (3992, 5504)]