128547640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5749}}^1$

素因数の和:5816

約数の個数: 64

約数和(自身を含む): 318780000

約数和(自身を除く): 190232360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1720, 2236, 2795, 4472, 5590, 5749, 11180, 11498, 22360, 22996, 28745, 45992, 57490, 74737, 114980, 149474, 229960, 247207, 298948, 373685, 494414, 597896, 747370, 988828, 1236035, 1494740, 1977656, 2472070, 2989480, 3213691, 4944140, 6427382, 9888280, 12854764, 16068455, 25709528, 32136910, 64273820, 128547640]

約数ペア:

[(1, 128547640), (2, 64273820), (4, 32136910), (5, 25709528), (8, 16068455), (10, 12854764), (13, 9888280), (20, 6427382), (26, 4944140), (40, 3213691), (43, 2989480), (52, 2472070), (65, 1977656), (86, 1494740), (104, 1236035), (130, 988828), (172, 747370), (215, 597896), (260, 494414), (344, 373685), (430, 298948), (520, 247207), (559, 229960), (860, 149474), (1118, 114980), (1720, 74737), (2236, 57490), (2795, 45992), (4472, 28745), (5590, 22996), (5749, 22360), (11180, 11498)]