208612640

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:490

約数の個数: 96

約数和(自身を含む): 514128384

約数和(自身を除く): 305515744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 137, 155, 160, 248, 274, 307, 310, 496, 548, 614, 620, 685, 992, 1096, 1228, 1240, 1370, 1535, 2192, 2456, 2480, 2740, 3070, 4247, 4384, 4912, 4960, 5480, 6140, 8494, 9517, 9824, 10960, 12280, 16988, 19034, 21235, 21920, 24560, 33976, 38068, 42059, 42470, 47585, 49120, 67952, 76136, 84118, 84940, 95170, 135904, 152272, 168236, 169880, 190340, 210295, 304544, 336472, 339760, 380680, 420590, 672944, 679520, 761360, 841180, 1303829, 1345888, 1522720, 1682360, 2607658, 3364720, 5215316, 6519145, 6729440, 10430632, 13038290, 20861264, 26076580, 41722528, 52153160, 104306320, 208612640]

約数ペア:

[(1, 208612640), (2, 104306320), (4, 52153160), (5, 41722528), (8, 26076580), (10, 20861264), (16, 13038290), (20, 10430632), (31, 6729440), (32, 6519145), (40, 5215316), (62, 3364720), (80, 2607658), (124, 1682360), (137, 1522720), (155, 1345888), (160, 1303829), (248, 841180), (274, 761360), (307, 679520), (310, 672944), (496, 420590), (548, 380680), (614, 339760), (620, 336472), (685, 304544), (992, 210295), (1096, 190340), (1228, 169880), (1240, 168236), (1370, 152272), (1535, 135904), (2192, 95170), (2456, 84940), (2480, 84118), (2740, 76136), (3070, 67952), (4247, 49120), (4384, 47585), (4912, 42470), (4960, 42059), (5480, 38068), (6140, 33976), (8494, 24560), (9517, 21920), (9824, 21235), (10960, 19034), (12280, 16988)]