21485516540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{528419}}^1$

素因数の和:528554

約数の個数: 48

約数和(自身を含む): 47938262400

約数和(自身を除く): 26452745860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 107, 190, 214, 380, 428, 535, 1070, 2033, 2140, 4066, 8132, 10165, 20330, 40660, 528419, 1056838, 2113676, 2642095, 5284190, 10039961, 10568380, 20079922, 40159844, 50199805, 56540833, 100399610, 113081666, 200799220, 226163332, 282704165, 565408330, 1074275827, 1130816660, 2148551654, 4297103308, 5371379135, 10742758270, 21485516540]

約数ペア:

[(1, 21485516540), (2, 10742758270), (4, 5371379135), (5, 4297103308), (10, 2148551654), (19, 1130816660), (20, 1074275827), (38, 565408330), (76, 282704165), (95, 226163332), (107, 200799220), (190, 113081666), (214, 100399610), (380, 56540833), (428, 50199805), (535, 40159844), (1070, 20079922), (2033, 10568380), (2140, 10039961), (4066, 5284190), (8132, 2642095), (10165, 2113676), (20330, 1056838), (40660, 528419)]