20003080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12197}}^1$

素因数の和:12249

約数の個数: 32

約数和(自身を含む): 46108440

約数和(自身を除く): 26105360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12197, 24394, 48788, 60985, 97576, 121970, 243940, 487880, 500077, 1000154, 2000308, 2500385, 4000616, 5000770, 10001540, 20003080]

約数ペア:

[(1, 20003080), (2, 10001540), (4, 5000770), (5, 4000616), (8, 2500385), (10, 2000308), (20, 1000154), (40, 500077), (41, 487880), (82, 243940), (164, 121970), (205, 97576), (328, 60985), (410, 48788), (820, 24394), (1640, 12197)]