19939840

素因数分解:

$2^9\times 5^1\times {\mathrm{7789}}^1$

素因数の和:7812

約数の個数: 40

約数和(自身を含む): 47815020

約数和(自身を除く): 27875180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7789, 15578, 31156, 38945, 62312, 77890, 124624, 155780, 249248, 311560, 498496, 623120, 996992, 1246240, 1993984, 2492480, 3987968, 4984960, 9969920, 19939840]

約数ペア:

[(1, 19939840), (2, 9969920), (4, 4984960), (5, 3987968), (8, 2492480), (10, 1993984), (16, 1246240), (20, 996992), (32, 623120), (40, 498496), (64, 311560), (80, 249248), (128, 155780), (160, 124624), (256, 77890), (320, 62312), (512, 38945), (640, 31156), (1280, 15578), (2560, 7789)]