81196640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72497}}^1$

素因数の和:72519

約数の個数: 48

約数和(自身を含む): 219233952

約数和(自身を除く): 138037312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72497, 144994, 289988, 362485, 507479, 579976, 724970, 1014958, 1159952, 1449940, 2029916, 2319904, 2537395, 2899880, 4059832, 5074790, 5799760, 8119664, 10149580, 11599520, 16239328, 20299160, 40598320, 81196640]

約数ペア:

[(1, 81196640), (2, 40598320), (4, 20299160), (5, 16239328), (7, 11599520), (8, 10149580), (10, 8119664), (14, 5799760), (16, 5074790), (20, 4059832), (28, 2899880), (32, 2537395), (35, 2319904), (40, 2029916), (56, 1449940), (70, 1159952), (80, 1014958), (112, 724970), (140, 579976), (160, 507479), (224, 362485), (280, 289988), (560, 144994), (1120, 72497)]