20199269120

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{631}}^1$

素因数の和:1022

約数の個数: 144

約数和(自身を含む): 49179130560

約数和(自身を除く): 28979861440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 281, 320, 356, 445, 562, 631, 640, 712, 890, 1124, 1262, 1280, 1405, 1424, 1780, 2248, 2524, 2810, 2848, 3155, 3560, 4496, 5048, 5620, 5696, 6310, 7120, 8992, 10096, 11240, 11392, 12620, 14240, 17984, 20192, 22480, 22784, 25009, 25240, 28480, 35968, 40384, 44960, 50018, 50480, 56159, 56960, 71936, 80768, 89920, 100036, 100960, 112318, 113920, 125045, 161536, 177311, 179840, 200072, 201920, 224636, 250090, 280795, 354622, 359680, 400144, 403840, 449272, 500180, 561590, 709244, 800288, 807680, 886555, 898544, 1000360, 1123180, 1418488, 1600576, 1773110, 1797088, 2000720, 2246360, 2836976, 3201152, 3546220, 3594176, 4001440, 4492720, 5673952, 6402304, 7092440, 7188352, 8002880, 8985440, 11347904, 14184880, 14376704, 15780679, 16005760, 17970880, 22695808, 28369760, 31561358, 32011520, 35941760, 45391616, 56739520, 63122716, 71883520, 78903395, 113479040, 126245432, 157806790, 226958080, 252490864, 315613580, 504981728, 631227160, 1009963456, 1262454320, 2019926912, 2524908640, 4039853824, 5049817280, 10099634560, 20199269120]

約数ペア:

[(1, 20199269120), (2, 10099634560), (4, 5049817280), (5, 4039853824), (8, 2524908640), (10, 2019926912), (16, 1262454320), (20, 1009963456), (32, 631227160), (40, 504981728), (64, 315613580), (80, 252490864), (89, 226958080), (128, 157806790), (160, 126245432), (178, 113479040), (256, 78903395), (281, 71883520), (320, 63122716), (356, 56739520), (445, 45391616), (562, 35941760), (631, 32011520), (640, 31561358), (712, 28369760), (890, 22695808), (1124, 17970880), (1262, 16005760), (1280, 15780679), (1405, 14376704), (1424, 14184880), (1780, 11347904), (2248, 8985440), (2524, 8002880), (2810, 7188352), (2848, 7092440), (3155, 6402304), (3560, 5673952), (4496, 4492720), (5048, 4001440), (5620, 3594176), (5696, 3546220), (6310, 3201152), (7120, 2836976), (8992, 2246360), (10096, 2000720), (11240, 1797088), (11392, 1773110), (12620, 1600576), (14240, 1418488), (17984, 1123180), (20192, 1000360), (22480, 898544), (22784, 886555), (25009, 807680), (25240, 800288), (28480, 709244), (35968, 561590), (40384, 500180), (44960, 449272), (50018, 403840), (50480, 400144), (56159, 359680), (56960, 354622), (71936, 280795), (80768, 250090), (89920, 224636), (100036, 201920), (100960, 200072), (112318, 179840), (113920, 177311), (125045, 161536)]