18656620

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4421}}^1$

素因数の和:4641

約数の個数: 24

約数和(自身を含む): 39373488

約数和(自身を除く): 20716868

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4421, 8842, 17684, 22105, 44210, 88420, 932831, 1865662, 3731324, 4664155, 9328310, 18656620]

約数ペア:

[(1, 18656620), (2, 9328310), (4, 4664155), (5, 3731324), (10, 1865662), (20, 932831), (211, 88420), (422, 44210), (844, 22105), (1055, 17684), (2110, 8842), (4220, 4421)]