1280980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3371}}^1$

素因数の和:3399

約数の個数: 24

約数和(自身を含む): 2832480

約数和(自身を除く): 1551500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 3371, 6742, 13484, 16855, 33710, 64049, 67420, 128098, 256196, 320245, 640490, 1280980]

約数ペア:

[(1, 1280980), (2, 640490), (4, 320245), (5, 256196), (10, 128098), (19, 67420), (20, 64049), (38, 33710), (76, 16855), (95, 13484), (190, 6742), (380, 3371)]