205000520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{5333}}^1$

素因数の和:5406

約数の個数: 48

約数和(自身を含む): 476699580

約数和(自身を除く): 271699060

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 961, 1240, 1922, 3844, 4805, 5333, 7688, 9610, 10666, 19220, 21332, 26665, 38440, 42664, 53330, 106660, 165323, 213320, 330646, 661292, 826615, 1322584, 1653230, 3306460, 5125013, 6612920, 10250026, 20500052, 25625065, 41000104, 51250130, 102500260, 205000520]

約数ペア:

[(1, 205000520), (2, 102500260), (4, 51250130), (5, 41000104), (8, 25625065), (10, 20500052), (20, 10250026), (31, 6612920), (40, 5125013), (62, 3306460), (124, 1653230), (155, 1322584), (248, 826615), (310, 661292), (620, 330646), (961, 213320), (1240, 165323), (1922, 106660), (3844, 53330), (4805, 42664), (5333, 38440), (7688, 26665), (9610, 21332), (10666, 19220)]