28427000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:190

約数の個数: 128

約数和(自身を含む): 79073280

約数和(自身を除く): 50646280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 100, 124, 125, 131, 140, 155, 175, 200, 217, 248, 250, 262, 280, 310, 350, 434, 500, 524, 620, 655, 700, 775, 868, 875, 917, 1000, 1048, 1085, 1240, 1310, 1400, 1550, 1736, 1750, 1834, 2170, 2620, 3100, 3275, 3500, 3668, 3875, 4061, 4340, 4585, 5240, 5425, 6200, 6550, 7000, 7336, 7750, 8122, 8680, 9170, 10850, 13100, 15500, 16244, 16375, 18340, 20305, 21700, 22925, 26200, 27125, 28427, 31000, 32488, 32750, 36680, 40610, 43400, 45850, 54250, 56854, 65500, 81220, 91700, 101525, 108500, 113708, 114625, 131000, 142135, 162440, 183400, 203050, 217000, 227416, 229250, 284270, 406100, 458500, 507625, 568540, 710675, 812200, 917000, 1015250, 1137080, 1421350, 2030500, 2842700, 3553375, 4061000, 5685400, 7106750, 14213500, 28427000]

約数ペア:

[(1, 28427000), (2, 14213500), (4, 7106750), (5, 5685400), (7, 4061000), (8, 3553375), (10, 2842700), (14, 2030500), (20, 1421350), (25, 1137080), (28, 1015250), (31, 917000), (35, 812200), (40, 710675), (50, 568540), (56, 507625), (62, 458500), (70, 406100), (100, 284270), (124, 229250), (125, 227416), (131, 217000), (140, 203050), (155, 183400), (175, 162440), (200, 142135), (217, 131000), (248, 114625), (250, 113708), (262, 108500), (280, 101525), (310, 91700), (350, 81220), (434, 65500), (500, 56854), (524, 54250), (620, 45850), (655, 43400), (700, 40610), (775, 36680), (868, 32750), (875, 32488), (917, 31000), (1000, 28427), (1048, 27125), (1085, 26200), (1240, 22925), (1310, 21700), (1400, 20305), (1550, 18340), (1736, 16375), (1750, 16244), (1834, 15500), (2170, 13100), (2620, 10850), (3100, 9170), (3275, 8680), (3500, 8122), (3668, 7750), (3875, 7336), (4061, 7000), (4340, 6550), (4585, 6200), (5240, 5425)]