12797440

素因数分解:

$2^9\times 5^1\times {\mathrm{4999}}^1$

素因数の和:5022

約数の個数: 40

約数和(自身を含む): 30690000

約数和(自身を除く): 17892560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 4999, 9998, 19996, 24995, 39992, 49990, 79984, 99980, 159968, 199960, 319936, 399920, 639872, 799840, 1279744, 1599680, 2559488, 3199360, 6398720, 12797440]

約数ペア:

[(1, 12797440), (2, 6398720), (4, 3199360), (5, 2559488), (8, 1599680), (10, 1279744), (16, 799840), (20, 639872), (32, 399920), (40, 319936), (64, 199960), (80, 159968), (128, 99980), (160, 79984), (256, 49990), (320, 39992), (512, 24995), (640, 19996), (1280, 9998), (2560, 4999)]