19701800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4283}}^1$

素因数の和:4322

約数の個数: 48

約数和(自身を含む): 47809440

約数和(自身を除く): 28107640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4283, 4600, 8566, 17132, 21415, 34264, 42830, 85660, 98509, 107075, 171320, 197018, 214150, 394036, 428300, 492545, 788072, 856600, 985090, 1970180, 2462725, 3940360, 4925450, 9850900, 19701800]

約数ペア:

[(1, 19701800), (2, 9850900), (4, 4925450), (5, 3940360), (8, 2462725), (10, 1970180), (20, 985090), (23, 856600), (25, 788072), (40, 492545), (46, 428300), (50, 394036), (92, 214150), (100, 197018), (115, 171320), (184, 107075), (200, 98509), (230, 85660), (460, 42830), (575, 34264), (920, 21415), (1150, 17132), (2300, 8566), (4283, 4600)]