81486080

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 216336960

約数和(自身を除く): 134850880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 64, 65, 80, 83, 104, 118, 128, 130, 160, 166, 208, 236, 256, 260, 295, 320, 332, 415, 416, 472, 520, 590, 640, 664, 767, 830, 832, 944, 1040, 1079, 1180, 1280, 1328, 1534, 1660, 1664, 1888, 2080, 2158, 2360, 2656, 3068, 3320, 3328, 3776, 3835, 4160, 4316, 4720, 4897, 5312, 5395, 6136, 6640, 7552, 7670, 8320, 8632, 9440, 9794, 10624, 10790, 12272, 13280, 15104, 15340, 16640, 17264, 18880, 19588, 21248, 21580, 24485, 24544, 26560, 30680, 34528, 37760, 39176, 43160, 48970, 49088, 53120, 61360, 63661, 69056, 75520, 78352, 86320, 97940, 98176, 106240, 122720, 127322, 138112, 156704, 172640, 195880, 196352, 245440, 254644, 276224, 313408, 318305, 345280, 391760, 490880, 509288, 626816, 636610, 690560, 783520, 981760, 1018576, 1253632, 1273220, 1381120, 1567040, 2037152, 2546440, 3134080, 4074304, 5092880, 6268160, 8148608, 10185760, 16297216, 20371520, 40743040, 81486080]

約数ペア:

[(1, 81486080), (2, 40743040), (4, 20371520), (5, 16297216), (8, 10185760), (10, 8148608), (13, 6268160), (16, 5092880), (20, 4074304), (26, 3134080), (32, 2546440), (40, 2037152), (52, 1567040), (59, 1381120), (64, 1273220), (65, 1253632), (80, 1018576), (83, 981760), (104, 783520), (118, 690560), (128, 636610), (130, 626816), (160, 509288), (166, 490880), (208, 391760), (236, 345280), (256, 318305), (260, 313408), (295, 276224), (320, 254644), (332, 245440), (415, 196352), (416, 195880), (472, 172640), (520, 156704), (590, 138112), (640, 127322), (664, 122720), (767, 106240), (830, 98176), (832, 97940), (944, 86320), (1040, 78352), (1079, 75520), (1180, 69056), (1280, 63661), (1328, 61360), (1534, 53120), (1660, 49088), (1664, 48970), (1888, 43160), (2080, 39176), (2158, 37760), (2360, 34528), (2656, 30680), (3068, 26560), (3320, 24544), (3328, 24485), (3776, 21580), (3835, 21248), (4160, 19588), (4316, 18880), (4720, 17264), (4897, 16640), (5312, 15340), (5395, 15104), (6136, 13280), (6640, 12272), (7552, 10790), (7670, 10624), (8320, 9794), (8632, 9440)]