20678047100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2912401}}^1$

素因数の和:2912486

約数の個数: 36

約数和(自身を含む): 45503368848

約数和(自身を除く): 24825321748

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 7100, 2912401, 5824802, 11649604, 14562005, 29124010, 58248020, 72810025, 145620050, 206780471, 291240100, 413560942, 827121884, 1033902355, 2067804710, 4135609420, 5169511775, 10339023550, 20678047100]

約数ペア:

[(1, 20678047100), (2, 10339023550), (4, 5169511775), (5, 4135609420), (10, 2067804710), (20, 1033902355), (25, 827121884), (50, 413560942), (71, 291240100), (100, 206780471), (142, 145620050), (284, 72810025), (355, 58248020), (710, 29124010), (1420, 14562005), (1775, 11649604), (3550, 5824802), (7100, 2912401)]