18810640

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3221}}^1$

素因数の和:3307

約数の個数: 40

約数和(自身を含む): 44347608

約数和(自身を除く): 25536968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3221, 5840, 6442, 12884, 16105, 25768, 32210, 51536, 64420, 128840, 235133, 257680, 470266, 940532, 1175665, 1881064, 2351330, 3762128, 4702660, 9405320, 18810640]

約数ペア:

[(1, 18810640), (2, 9405320), (4, 4702660), (5, 3762128), (8, 2351330), (10, 1881064), (16, 1175665), (20, 940532), (40, 470266), (73, 257680), (80, 235133), (146, 128840), (292, 64420), (365, 51536), (584, 32210), (730, 25768), (1168, 16105), (1460, 12884), (2920, 6442), (3221, 5840)]