77661640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277363}}^1$

素因数の和:277381

約数の個数: 32

約数和(自身を含む): 199702080

約数和(自身を除く): 122040440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 277363, 554726, 1109452, 1386815, 1941541, 2218904, 2773630, 3883082, 5547260, 7766164, 9707705, 11094520, 15532328, 19415410, 38830820, 77661640]

約数ペア:

[(1, 77661640), (2, 38830820), (4, 19415410), (5, 15532328), (7, 11094520), (8, 9707705), (10, 7766164), (14, 5547260), (20, 3883082), (28, 2773630), (35, 2218904), (40, 1941541), (56, 1386815), (70, 1109452), (140, 554726), (280, 277363)]