1285220

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{359}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 2721600

約数和(自身を除く): 1436380

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 359, 716, 718, 895, 1436, 1790, 1795, 3580, 3590, 7180, 64261, 128522, 257044, 321305, 642610, 1285220]

約数ペア:

[(1, 1285220), (2, 642610), (4, 321305), (5, 257044), (10, 128522), (20, 64261), (179, 7180), (358, 3590), (359, 3580), (716, 1795), (718, 1790), (895, 1436)]