199818880

素因数分解:

$2^7\times 5^1\times {\mathrm{312217}}^1$

素因数の和:312236

約数の個数: 32

約数和(自身を含む): 477693540

約数和(自身を除く): 277874660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 312217, 624434, 1248868, 1561085, 2497736, 3122170, 4995472, 6244340, 9990944, 12488680, 19981888, 24977360, 39963776, 49954720, 99909440, 199818880]

約数ペア:

[(1, 199818880), (2, 99909440), (4, 49954720), (5, 39963776), (8, 24977360), (10, 19981888), (16, 12488680), (20, 9990944), (32, 6244340), (40, 4995472), (64, 3122170), (80, 2497736), (128, 1561085), (160, 1248868), (320, 624434), (640, 312217)]