641208280

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{57047}}^1$

素因数の和:57339

約数の個数: 32

約数和(自身を含む): 1447878240

約数和(自身を除く): 806669960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 57047, 114094, 228188, 285235, 456376, 570470, 1140940, 2281880, 16030207, 32060414, 64120828, 80151035, 128241656, 160302070, 320604140, 641208280]

約数ペア:

[(1, 641208280), (2, 320604140), (4, 160302070), (5, 128241656), (8, 80151035), (10, 64120828), (20, 32060414), (40, 16030207), (281, 2281880), (562, 1140940), (1124, 570470), (1405, 456376), (2248, 285235), (2810, 228188), (5620, 114094), (11240, 57047)]