20121856256

素因数分解:

$2^8\times {\mathrm{61}}^1\times {\mathrm{1288541}}^1$

素因数の和:1288618

約数の個数: 36

約数和(自身を含む): 40823587644

約数和(自身を除く): 20701731388

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 244, 256, 488, 976, 1952, 3904, 7808, 15616, 1288541, 2577082, 5154164, 10308328, 20616656, 41233312, 78601001, 82466624, 157202002, 164933248, 314404004, 329866496, 628808008, 1257616016, 2515232032, 5030464064, 10060928128, 20121856256]

約数ペア:

[(1, 20121856256), (2, 10060928128), (4, 5030464064), (8, 2515232032), (16, 1257616016), (32, 628808008), (61, 329866496), (64, 314404004), (122, 164933248), (128, 157202002), (244, 82466624), (256, 78601001), (488, 41233312), (976, 20616656), (1952, 10308328), (3904, 5154164), (7808, 2577082), (15616, 1288541)]