19824128

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1298

約数の個数: 40

約数和(自身を含む): 40920000

約数和(自身を除く): 21095872

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1249, 1984, 2498, 3968, 4996, 7936, 9992, 15872, 19984, 38719, 39968, 77438, 79936, 154876, 159872, 309752, 319744, 619504, 639488, 1239008, 2478016, 4956032, 9912064, 19824128]

約数ペア:

[(1, 19824128), (2, 9912064), (4, 4956032), (8, 2478016), (16, 1239008), (31, 639488), (32, 619504), (62, 319744), (64, 309752), (124, 159872), (128, 154876), (248, 79936), (256, 77438), (496, 39968), (512, 38719), (992, 19984), (1249, 15872), (1984, 9992), (2498, 7936), (3968, 4996)]