19088980

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1489}}^1$

素因数の和:2139

約数の個数: 24

約数和(自身を含む): 40176360

約数和(自身を除く): 21087380

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 1489, 2564, 2978, 3205, 5956, 6410, 7445, 12820, 14890, 29780, 954449, 1908898, 3817796, 4772245, 9544490, 19088980]

約数ペア:

[(1, 19088980), (2, 9544490), (4, 4772245), (5, 3817796), (10, 1908898), (20, 954449), (641, 29780), (1282, 14890), (1489, 12820), (2564, 7445), (2978, 6410), (3205, 5956)]