81768920

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{5791}}^1$

素因数の和:6155

約数の個数: 32

約数和(自身を含む): 184533120

約数和(自身を除く): 102764200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 5791, 7060, 11582, 14120, 23164, 28955, 46328, 57910, 115820, 231640, 2044223, 4088446, 8176892, 10221115, 16353784, 20442230, 40884460, 81768920]

約数ペア:

[(1, 81768920), (2, 40884460), (4, 20442230), (5, 16353784), (8, 10221115), (10, 8176892), (20, 4088446), (40, 2044223), (353, 231640), (706, 115820), (1412, 57910), (1765, 46328), (2824, 28955), (3530, 23164), (5791, 14120), (7060, 11582)]