1278380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1559}}^1$

素因数の和:1609

約数の個数: 24

約数和(自身を含む): 2751840

約数和(自身を除く): 1473460

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1559, 3118, 6236, 7795, 15590, 31180, 63919, 127838, 255676, 319595, 639190, 1278380]

約数ペア:

[(1, 1278380), (2, 639190), (4, 319595), (5, 255676), (10, 127838), (20, 63919), (41, 31180), (82, 15590), (164, 7795), (205, 6236), (410, 3118), (820, 1559)]