18729520

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2273}}^1$

素因数の和:2389

約数の個数: 40

約数和(自身を含む): 43988256

約数和(自身を除く): 25258736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2273, 4120, 4546, 8240, 9092, 11365, 18184, 22730, 36368, 45460, 90920, 181840, 234119, 468238, 936476, 1170595, 1872952, 2341190, 3745904, 4682380, 9364760, 18729520]

約数ペア:

[(1, 18729520), (2, 9364760), (4, 4682380), (5, 3745904), (8, 2341190), (10, 1872952), (16, 1170595), (20, 936476), (40, 468238), (80, 234119), (103, 181840), (206, 90920), (412, 45460), (515, 36368), (824, 22730), (1030, 18184), (1648, 11365), (2060, 9092), (2273, 8240), (4120, 4546)]