128654080

素因数分解:

$2^8\times 5^1\times {\mathrm{100511}}^1$

素因数の和:100532

約数の個数: 36

約数和(自身を含む): 308169792

約数和(自身を除く): 179515712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 100511, 201022, 402044, 502555, 804088, 1005110, 1608176, 2010220, 3216352, 4020440, 6432704, 8040880, 12865408, 16081760, 25730816, 32163520, 64327040, 128654080]

約数ペア:

[(1, 128654080), (2, 64327040), (4, 32163520), (5, 25730816), (8, 16081760), (10, 12865408), (16, 8040880), (20, 6432704), (32, 4020440), (40, 3216352), (64, 2010220), (80, 1608176), (128, 1005110), (160, 804088), (256, 502555), (320, 402044), (640, 201022), (1280, 100511)]