2011072520

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{78191}}^1$

素因数の和:78845

約数の個数: 32

約数和(自身を含む): 4532008320

約数和(自身を除く): 2520935800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 25720, 78191, 156382, 312764, 390955, 625528, 781910, 1563820, 3127640, 50276813, 100553626, 201107252, 251384065, 402214504, 502768130, 1005536260, 2011072520]

約数ペア:

[(1, 2011072520), (2, 1005536260), (4, 502768130), (5, 402214504), (8, 251384065), (10, 201107252), (20, 100553626), (40, 50276813), (643, 3127640), (1286, 1563820), (2572, 781910), (3215, 625528), (5144, 390955), (6430, 312764), (12860, 156382), (25720, 78191)]