3945800

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 9309300

約数和(自身を除く): 5363500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 181, 200, 218, 362, 436, 545, 724, 872, 905, 1090, 1448, 1810, 2180, 2725, 3620, 4360, 4525, 5450, 7240, 9050, 10900, 18100, 19729, 21800, 36200, 39458, 78916, 98645, 157832, 197290, 394580, 493225, 789160, 986450, 1972900, 3945800]

約数ペア:

[(1, 3945800), (2, 1972900), (4, 986450), (5, 789160), (8, 493225), (10, 394580), (20, 197290), (25, 157832), (40, 98645), (50, 78916), (100, 39458), (109, 36200), (181, 21800), (200, 19729), (218, 18100), (362, 10900), (436, 9050), (545, 7240), (724, 5450), (872, 4525), (905, 4360), (1090, 3620), (1448, 2725), (1810, 2180)]