390123440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{811}}^1\times {\mathrm{859}}^1$

素因数の和:1690

約数の個数: 80

約数和(自身を含む): 1039100160

約数和(自身を除く): 648976720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 811, 859, 1622, 1718, 3244, 3436, 4055, 4295, 5677, 6013, 6488, 6872, 8110, 8590, 11354, 12026, 12976, 13744, 16220, 17180, 22708, 24052, 28385, 30065, 32440, 34360, 45416, 48104, 56770, 60130, 64880, 68720, 90832, 96208, 113540, 120260, 227080, 240520, 454160, 481040, 696649, 1393298, 2786596, 3483245, 4876543, 5573192, 6966490, 9753086, 11146384, 13932980, 19506172, 24382715, 27865960, 39012344, 48765430, 55731920, 78024688, 97530860, 195061720, 390123440]

約数ペア:

[(1, 390123440), (2, 195061720), (4, 97530860), (5, 78024688), (7, 55731920), (8, 48765430), (10, 39012344), (14, 27865960), (16, 24382715), (20, 19506172), (28, 13932980), (35, 11146384), (40, 9753086), (56, 6966490), (70, 5573192), (80, 4876543), (112, 3483245), (140, 2786596), (280, 1393298), (560, 696649), (811, 481040), (859, 454160), (1622, 240520), (1718, 227080), (3244, 120260), (3436, 113540), (4055, 96208), (4295, 90832), (5677, 68720), (6013, 64880), (6488, 60130), (6872, 56770), (8110, 48104), (8590, 45416), (11354, 34360), (12026, 32440), (12976, 30065), (13744, 28385), (16220, 24052), (17180, 22708)]