2881000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:131

約数の個数: 64

約数和(自身を含む): 7001280

約数和(自身を除く): 4120280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 67, 86, 100, 125, 134, 172, 200, 215, 250, 268, 335, 344, 430, 500, 536, 670, 860, 1000, 1075, 1340, 1675, 1720, 2150, 2680, 2881, 3350, 4300, 5375, 5762, 6700, 8375, 8600, 10750, 11524, 13400, 14405, 16750, 21500, 23048, 28810, 33500, 43000, 57620, 67000, 72025, 115240, 144050, 288100, 360125, 576200, 720250, 1440500, 2881000]

約数ペア:

[(1, 2881000), (2, 1440500), (4, 720250), (5, 576200), (8, 360125), (10, 288100), (20, 144050), (25, 115240), (40, 72025), (43, 67000), (50, 57620), (67, 43000), (86, 33500), (100, 28810), (125, 23048), (134, 21500), (172, 16750), (200, 14405), (215, 13400), (250, 11524), (268, 10750), (335, 8600), (344, 8375), (430, 6700), (500, 5762), (536, 5375), (670, 4300), (860, 3350), (1000, 2881), (1075, 2680), (1340, 2150), (1675, 1720)]