281519000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:466

約数の個数: 128

約数和(自身を含む): 761080320

約数和(自身を除く): 479561320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 131, 140, 175, 200, 250, 262, 280, 307, 350, 500, 524, 614, 655, 700, 875, 917, 1000, 1048, 1228, 1310, 1400, 1535, 1750, 1834, 2149, 2456, 2620, 3070, 3275, 3500, 3668, 4298, 4585, 5240, 6140, 6550, 7000, 7336, 7675, 8596, 9170, 10745, 12280, 13100, 15350, 16375, 17192, 18340, 21490, 22925, 26200, 30700, 32750, 36680, 38375, 40217, 42980, 45850, 53725, 61400, 65500, 76750, 80434, 85960, 91700, 107450, 114625, 131000, 153500, 160868, 183400, 201085, 214900, 229250, 268625, 281519, 307000, 321736, 402170, 429800, 458500, 537250, 563038, 804340, 917000, 1005425, 1074500, 1126076, 1407595, 1608680, 2010850, 2149000, 2252152, 2815190, 4021700, 5027125, 5630380, 7037975, 8043400, 10054250, 11260760, 14075950, 20108500, 28151900, 35189875, 40217000, 56303800, 70379750, 140759500, 281519000]

約数ペア:

[(1, 281519000), (2, 140759500), (4, 70379750), (5, 56303800), (7, 40217000), (8, 35189875), (10, 28151900), (14, 20108500), (20, 14075950), (25, 11260760), (28, 10054250), (35, 8043400), (40, 7037975), (50, 5630380), (56, 5027125), (70, 4021700), (100, 2815190), (125, 2252152), (131, 2149000), (140, 2010850), (175, 1608680), (200, 1407595), (250, 1126076), (262, 1074500), (280, 1005425), (307, 917000), (350, 804340), (500, 563038), (524, 537250), (614, 458500), (655, 429800), (700, 402170), (875, 321736), (917, 307000), (1000, 281519), (1048, 268625), (1228, 229250), (1310, 214900), (1400, 201085), (1535, 183400), (1750, 160868), (1834, 153500), (2149, 131000), (2456, 114625), (2620, 107450), (3070, 91700), (3275, 85960), (3500, 80434), (3668, 76750), (4298, 65500), (4585, 61400), (5240, 53725), (6140, 45850), (6550, 42980), (7000, 40217), (7336, 38375), (7675, 36680), (8596, 32750), (9170, 30700), (10745, 26200), (12280, 22925), (13100, 21490), (15350, 18340), (16375, 17192)]