19959440

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{719}}^1$

素因数の和:1079

約数の個数: 40

約数和(自身を含む): 46604160

約数和(自身を除く): 26644720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 719, 1388, 1438, 1735, 2776, 2876, 3470, 3595, 5552, 5752, 6940, 7190, 11504, 13880, 14380, 27760, 28760, 57520, 249493, 498986, 997972, 1247465, 1995944, 2494930, 3991888, 4989860, 9979720, 19959440]

約数ペア:

[(1, 19959440), (2, 9979720), (4, 4989860), (5, 3991888), (8, 2494930), (10, 1995944), (16, 1247465), (20, 997972), (40, 498986), (80, 249493), (347, 57520), (694, 28760), (719, 27760), (1388, 14380), (1438, 13880), (1735, 11504), (2776, 7190), (2876, 6940), (3470, 5752), (3595, 5552)]