209887360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:270

約数の個数: 128

約数和(自身を含む): 528768000

約数和(自身を除く): 318880640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 71, 80, 124, 128, 142, 149, 155, 160, 248, 284, 298, 310, 320, 355, 496, 568, 596, 620, 640, 710, 745, 992, 1136, 1192, 1240, 1420, 1490, 1984, 2201, 2272, 2384, 2480, 2840, 2980, 3968, 4402, 4544, 4619, 4768, 4960, 5680, 5960, 8804, 9088, 9238, 9536, 9920, 10579, 11005, 11360, 11920, 17608, 18476, 19072, 19840, 21158, 22010, 22720, 23095, 23840, 35216, 36952, 42316, 44020, 45440, 46190, 47680, 52895, 70432, 73904, 84632, 88040, 92380, 95360, 105790, 140864, 147808, 169264, 176080, 184760, 211580, 281728, 295616, 327949, 338528, 352160, 369520, 423160, 591232, 655898, 677056, 704320, 739040, 846320, 1311796, 1354112, 1408640, 1478080, 1639745, 1692640, 2623592, 2956160, 3279490, 3385280, 5247184, 6558980, 6770560, 10494368, 13117960, 20988736, 26235920, 41977472, 52471840, 104943680, 209887360]

約数ペア:

[(1, 209887360), (2, 104943680), (4, 52471840), (5, 41977472), (8, 26235920), (10, 20988736), (16, 13117960), (20, 10494368), (31, 6770560), (32, 6558980), (40, 5247184), (62, 3385280), (64, 3279490), (71, 2956160), (80, 2623592), (124, 1692640), (128, 1639745), (142, 1478080), (149, 1408640), (155, 1354112), (160, 1311796), (248, 846320), (284, 739040), (298, 704320), (310, 677056), (320, 655898), (355, 591232), (496, 423160), (568, 369520), (596, 352160), (620, 338528), (640, 327949), (710, 295616), (745, 281728), (992, 211580), (1136, 184760), (1192, 176080), (1240, 169264), (1420, 147808), (1490, 140864), (1984, 105790), (2201, 95360), (2272, 92380), (2384, 88040), (2480, 84632), (2840, 73904), (2980, 70432), (3968, 52895), (4402, 47680), (4544, 46190), (4619, 45440), (4768, 44020), (4960, 42316), (5680, 36952), (5960, 35216), (8804, 23840), (9088, 23095), (9238, 22720), (9536, 22010), (9920, 21158), (10579, 19840), (11005, 19072), (11360, 18476), (11920, 17608)]