1319002880

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2557}}^1$

素因数の和:2622

約数の個数: 144

約数和(自身を含む): 3513586944

約数和(自身を除く): 2194584064

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1280, 1612, 1664, 1984, 2015, 2080, 2480, 2557, 3224, 3328, 3968, 4030, 4160, 4960, 5114, 6448, 7936, 8060, 8320, 9920, 10228, 12785, 12896, 16120, 16640, 19840, 20456, 25570, 25792, 32240, 33241, 39680, 40912, 51140, 51584, 64480, 66482, 79267, 81824, 102280, 103168, 128960, 132964, 158534, 163648, 166205, 204560, 257920, 265928, 317068, 327296, 332410, 396335, 409120, 515840, 531856, 634136, 654592, 664820, 792670, 818240, 1030471, 1063712, 1268272, 1329640, 1585340, 1636480, 2060942, 2127424, 2536544, 2659280, 3170680, 3272960, 4121884, 4254848, 5073088, 5152355, 5318560, 6341360, 8243768, 8509696, 10146176, 10304710, 10637120, 12682720, 16487536, 20292352, 20609420, 21274240, 25365440, 32975072, 41218840, 42548480, 50730880, 65950144, 82437680, 101461760, 131900288, 164875360, 263800576, 329750720, 659501440, 1319002880]

約数ペア:

[(1, 1319002880), (2, 659501440), (4, 329750720), (5, 263800576), (8, 164875360), (10, 131900288), (13, 101461760), (16, 82437680), (20, 65950144), (26, 50730880), (31, 42548480), (32, 41218840), (40, 32975072), (52, 25365440), (62, 21274240), (64, 20609420), (65, 20292352), (80, 16487536), (104, 12682720), (124, 10637120), (128, 10304710), (130, 10146176), (155, 8509696), (160, 8243768), (208, 6341360), (248, 5318560), (256, 5152355), (260, 5073088), (310, 4254848), (320, 4121884), (403, 3272960), (416, 3170680), (496, 2659280), (520, 2536544), (620, 2127424), (640, 2060942), (806, 1636480), (832, 1585340), (992, 1329640), (1040, 1268272), (1240, 1063712), (1280, 1030471), (1612, 818240), (1664, 792670), (1984, 664820), (2015, 654592), (2080, 634136), (2480, 531856), (2557, 515840), (3224, 409120), (3328, 396335), (3968, 332410), (4030, 327296), (4160, 317068), (4960, 265928), (5114, 257920), (6448, 204560), (7936, 166205), (8060, 163648), (8320, 158534), (9920, 132964), (10228, 128960), (12785, 103168), (12896, 102280), (16120, 81824), (16640, 79267), (19840, 66482), (20456, 64480), (25570, 51584), (25792, 51140), (32240, 40912), (33241, 39680)]