20498080

素因数分解:

$2^5\times 5^1\times {\mathrm{128113}}^1$

素因数の和:128128

約数の個数: 24

約数和(自身を含む): 48427092

約数和(自身を除く): 27929012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128113, 256226, 512452, 640565, 1024904, 1281130, 2049808, 2562260, 4099616, 5124520, 10249040, 20498080]

約数ペア:

[(1, 20498080), (2, 10249040), (4, 5124520), (5, 4099616), (8, 2562260), (10, 2049808), (16, 1281130), (20, 1024904), (32, 640565), (40, 512452), (80, 256226), (160, 128113)]