20455790

素因数分解:

$2^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9173}}^1$

素因数の和:9403

約数の個数: 16

約数和(自身を含む): 36989568

約数和(自身を除く): 16533778

約数列:

[1, 2, 5, 10, 223, 446, 1115, 2230, 9173, 18346, 45865, 91730, 2045579, 4091158, 10227895, 20455790]

約数ペア:

[(1, 20455790), (2, 10227895), (5, 4091158), (10, 2045579), (223, 91730), (446, 45865), (1115, 18346), (2230, 9173)]