19817120

素因数分解:

$2^5\times 5^1\times {\mathrm{211}}^1\times {\mathrm{587}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 47119968

約数和(自身を除く): 27302848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 211, 422, 587, 844, 1055, 1174, 1688, 2110, 2348, 2935, 3376, 4220, 4696, 5870, 6752, 8440, 9392, 11740, 16880, 18784, 23480, 33760, 46960, 93920, 123857, 247714, 495428, 619285, 990856, 1238570, 1981712, 2477140, 3963424, 4954280, 9908560, 19817120]

約数ペア:

[(1, 19817120), (2, 9908560), (4, 4954280), (5, 3963424), (8, 2477140), (10, 1981712), (16, 1238570), (20, 990856), (32, 619285), (40, 495428), (80, 247714), (160, 123857), (211, 93920), (422, 46960), (587, 33760), (844, 23480), (1055, 18784), (1174, 16880), (1688, 11740), (2110, 9392), (2348, 8440), (2935, 6752), (3376, 5870), (4220, 4696)]