1721020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 4354560

約数和(自身を除く): 2633540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 647, 665, 1294, 1330, 2588, 2660, 3235, 4529, 6470, 9058, 12293, 12940, 18116, 22645, 24586, 45290, 49172, 61465, 86051, 90580, 122930, 172102, 245860, 344204, 430255, 860510, 1721020]

約数ペア:

[(1, 1721020), (2, 860510), (4, 430255), (5, 344204), (7, 245860), (10, 172102), (14, 122930), (19, 90580), (20, 86051), (28, 61465), (35, 49172), (38, 45290), (70, 24586), (76, 22645), (95, 18116), (133, 12940), (140, 12293), (190, 9058), (266, 6470), (380, 4529), (532, 3235), (647, 2660), (665, 2588), (1294, 1330)]