21973856

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 45256176

約数和(自身を除く): 23282320

約数列:

[1, 2, 4, 8, 16, 32, 37, 67, 74, 134, 148, 268, 277, 296, 536, 554, 592, 1072, 1108, 1184, 2144, 2216, 2479, 4432, 4958, 8864, 9916, 10249, 18559, 19832, 20498, 37118, 39664, 40996, 74236, 79328, 81992, 148472, 163984, 296944, 327968, 593888, 686683, 1373366, 2746732, 5493464, 10986928, 21973856]

約数ペア:

[(1, 21973856), (2, 10986928), (4, 5493464), (8, 2746732), (16, 1373366), (32, 686683), (37, 593888), (67, 327968), (74, 296944), (134, 163984), (148, 148472), (268, 81992), (277, 79328), (296, 74236), (536, 40996), (554, 39664), (592, 37118), (1072, 20498), (1108, 19832), (1184, 18559), (2144, 10249), (2216, 9916), (2479, 8864), (4432, 4958)]