72920840

素因数分解:

$2^3\times 5^1\times {\mathrm{1823021}}^1$

素因数の和:1823032

約数の個数: 16

約数和(自身を含む): 164071980

約数和(自身を除く): 91151140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1823021, 3646042, 7292084, 9115105, 14584168, 18230210, 36460420, 72920840]

約数ペア:

[(1, 72920840), (2, 36460420), (4, 18230210), (5, 14584168), (8, 9115105), (10, 7292084), (20, 3646042), (40, 1823021)]