20000260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{383}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 48254976

約数和(自身を除く): 28254716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 373, 383, 746, 766, 1492, 1532, 1865, 1915, 2611, 2681, 3730, 3830, 5222, 5362, 7460, 7660, 10444, 10724, 13055, 13405, 26110, 26810, 52220, 53620, 142859, 285718, 571436, 714295, 1000013, 1428590, 2000026, 2857180, 4000052, 5000065, 10000130, 20000260]

約数ペア:

[(1, 20000260), (2, 10000130), (4, 5000065), (5, 4000052), (7, 2857180), (10, 2000026), (14, 1428590), (20, 1000013), (28, 714295), (35, 571436), (70, 285718), (140, 142859), (373, 53620), (383, 52220), (746, 26810), (766, 26110), (1492, 13405), (1532, 13055), (1865, 10724), (1915, 10444), (2611, 7660), (2681, 7460), (3730, 5362), (3830, 5222)]