639554048

素因数分解:

$2^9\times 7^1\times {\mathrm{178447}}^1$

素因数の和:178472

約数の個数: 40

約数和(自身を含む): 1460418432

約数和(自身を除く): 820864384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 178447, 356894, 713788, 1249129, 1427576, 2498258, 2855152, 4996516, 5710304, 9993032, 11420608, 19986064, 22841216, 39972128, 45682432, 79944256, 91364864, 159888512, 319777024, 639554048]

約数ペア:

[(1, 639554048), (2, 319777024), (4, 159888512), (7, 91364864), (8, 79944256), (14, 45682432), (16, 39972128), (28, 22841216), (32, 19986064), (56, 11420608), (64, 9993032), (112, 5710304), (128, 4996516), (224, 2855152), (256, 2498258), (448, 1427576), (512, 1249129), (896, 713788), (1792, 356894), (3584, 178447)]