640394784

素因数分解:

$2^5\times 3^2\times {\mathrm{379}}^1\times {\mathrm{5867}}^1$

素因数の和:6262

約数の個数: 72

約数和(自身を含む): 1826238960

約数和(自身を除く): 1185844176

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 379, 758, 1137, 1516, 2274, 3032, 3411, 4548, 5867, 6064, 6822, 9096, 11734, 12128, 13644, 17601, 18192, 23468, 27288, 35202, 36384, 46936, 52803, 54576, 70404, 93872, 105606, 109152, 140808, 187744, 211212, 281616, 422424, 563232, 844848, 1689696, 2223593, 4447186, 6670779, 8894372, 13341558, 17788744, 20012337, 26683116, 35577488, 40024674, 53366232, 71154976, 80049348, 106732464, 160098696, 213464928, 320197392, 640394784]

約数ペア:

[(1, 640394784), (2, 320197392), (3, 213464928), (4, 160098696), (6, 106732464), (8, 80049348), (9, 71154976), (12, 53366232), (16, 40024674), (18, 35577488), (24, 26683116), (32, 20012337), (36, 17788744), (48, 13341558), (72, 8894372), (96, 6670779), (144, 4447186), (288, 2223593), (379, 1689696), (758, 844848), (1137, 563232), (1516, 422424), (2274, 281616), (3032, 211212), (3411, 187744), (4548, 140808), (5867, 109152), (6064, 105606), (6822, 93872), (9096, 70404), (11734, 54576), (12128, 52803), (13644, 46936), (17601, 36384), (18192, 35202), (23468, 27288)]