19979008

素因数分解:

$2^8\times 7^1\times {\mathrm{11149}}^1$

素因数の和:11172

約数の個数: 36

約数和(自身を含む): 45581200

約数和(自身を除く): 25602192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11149, 22298, 44596, 78043, 89192, 156086, 178384, 312172, 356768, 624344, 713536, 1248688, 1427072, 2497376, 2854144, 4994752, 9989504, 19979008]

約数ペア:

[(1, 19979008), (2, 9989504), (4, 4994752), (7, 2854144), (8, 2497376), (14, 1427072), (16, 1248688), (28, 713536), (32, 624344), (56, 356768), (64, 312172), (112, 178384), (128, 156086), (224, 89192), (256, 78043), (448, 44596), (896, 22298), (1792, 11149)]