18793780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 41081040

約数和(自身を除く): 22287260

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 109, 148, 185, 218, 233, 370, 436, 466, 545, 740, 932, 1090, 1165, 2180, 2330, 4033, 4660, 8066, 8621, 16132, 17242, 20165, 25397, 34484, 40330, 43105, 50794, 80660, 86210, 101588, 126985, 172420, 253970, 507940, 939689, 1879378, 3758756, 4698445, 9396890, 18793780]

約数ペア:

[(1, 18793780), (2, 9396890), (4, 4698445), (5, 3758756), (10, 1879378), (20, 939689), (37, 507940), (74, 253970), (109, 172420), (148, 126985), (185, 101588), (218, 86210), (233, 80660), (370, 50794), (436, 43105), (466, 40330), (545, 34484), (740, 25397), (932, 20165), (1090, 17242), (1165, 16132), (2180, 8621), (2330, 8066), (4033, 4660)]