63640840

素因数分解:

$2^3\times 5^1\times {\mathrm{1591021}}^1$

素因数の和:1591032

約数の個数: 16

約数和(自身を含む): 143191980

約数和(自身を除く): 79551140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1591021, 3182042, 6364084, 7955105, 12728168, 15910210, 31820420, 63640840]

約数ペア:

[(1, 63640840), (2, 31820420), (4, 15910210), (5, 12728168), (8, 7955105), (10, 6364084), (20, 3182042), (40, 1591021)]