21625541680

素因数分解:

$2^4\times 5^1\times {\mathrm{270319271}}^1$

素因数の和:270319284

約数の個数: 20

約数和(自身を含む): 50279384592

約数和(自身を除く): 28653842912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270319271, 540638542, 1081277084, 1351596355, 2162554168, 2703192710, 4325108336, 5406385420, 10812770840, 21625541680]

約数ペア:

[(1, 21625541680), (2, 10812770840), (4, 5406385420), (5, 4325108336), (8, 2703192710), (10, 2162554168), (16, 1351596355), (20, 1081277084), (40, 540638542), (80, 270319271)]