2855800

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 6751800

約数和(自身を除く): 3896000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 131, 200, 218, 262, 436, 524, 545, 655, 872, 1048, 1090, 1310, 2180, 2620, 2725, 3275, 4360, 5240, 5450, 6550, 10900, 13100, 14279, 21800, 26200, 28558, 57116, 71395, 114232, 142790, 285580, 356975, 571160, 713950, 1427900, 2855800]

約数ペア:

[(1, 2855800), (2, 1427900), (4, 713950), (5, 571160), (8, 356975), (10, 285580), (20, 142790), (25, 114232), (40, 71395), (50, 57116), (100, 28558), (109, 26200), (131, 21800), (200, 14279), (218, 13100), (262, 10900), (436, 6550), (524, 5450), (545, 5240), (655, 4360), (872, 3275), (1048, 2725), (1090, 2620), (1310, 2180)]