6398720

素因数分解:

$2^8\times 5^1\times {\mathrm{4999}}^1$

素因数の和:5020

約数の個数: 36

約数和(自身を含む): 15330000

約数和(自身を除く): 8931280

約数列:

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

約数ペア:

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