388664840

素因数分解:

$2^3\times 5^1\times {\mathrm{9716621}}^1$

素因数の和:9716632

約数の個数: 16

約数和(自身を含む): 874495980

約数和(自身を除く): 485831140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9716621, 19433242, 38866484, 48583105, 77732968, 97166210, 194332420, 388664840]

約数ペア:

[(1, 388664840), (2, 194332420), (4, 97166210), (5, 77732968), (8, 48583105), (10, 38866484), (20, 19433242), (40, 9716621)]