19315720

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{751}}^1$

素因数の和:1405

約数の個数: 32

約数和(自身を含む): 43585920

約数和(自身を除く): 24270200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 751, 1286, 1502, 2572, 3004, 3215, 3755, 5144, 6008, 6430, 7510, 12860, 15020, 25720, 30040, 482893, 965786, 1931572, 2414465, 3863144, 4828930, 9657860, 19315720]

約数ペア:

[(1, 19315720), (2, 9657860), (4, 4828930), (5, 3863144), (8, 2414465), (10, 1931572), (20, 965786), (40, 482893), (643, 30040), (751, 25720), (1286, 15020), (1502, 12860), (2572, 7510), (3004, 6430), (3215, 6008), (3755, 5144)]