201638770

素因数分解:

$2^1\times 5^1\times {\mathrm{991}}^1\times {\mathrm{20347}}^1$

素因数の和:21345

約数の個数: 16

約数和(自身を含む): 363333888

約数和(自身を除く): 161695118

約数列:

[1, 2, 5, 10, 991, 1982, 4955, 9910, 20347, 40694, 101735, 203470, 20163877, 40327754, 100819385, 201638770]

約数ペア:

[(1, 201638770), (2, 100819385), (5, 40327754), (10, 20163877), (991, 203470), (1982, 101735), (4955, 40694), (9910, 20347)]