21809144

素因数分解:

$2^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{2039}}^1$

素因数の和:2243

約数の個数: 32

約数和(自身を含む): 47001600

約数和(自身を除く): 25192456

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 191, 382, 764, 1337, 1528, 2039, 2674, 4078, 5348, 8156, 10696, 14273, 16312, 28546, 57092, 114184, 389449, 778898, 1557796, 2726143, 3115592, 5452286, 10904572, 21809144]

約数ペア:

[(1, 21809144), (2, 10904572), (4, 5452286), (7, 3115592), (8, 2726143), (14, 1557796), (28, 778898), (56, 389449), (191, 114184), (382, 57092), (764, 28546), (1337, 16312), (1528, 14273), (2039, 10696), (2674, 8156), (4078, 5348)]