20178478

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{4643}}^1$

素因数の和:4739

約数の個数: 16

約数和(自身を含む): 31597776

約数和(自身を除く): 11419298

約数列:

[1, 2, 41, 53, 82, 106, 2173, 4346, 4643, 9286, 190363, 246079, 380726, 492158, 10089239, 20178478]

約数ペア:

[(1, 20178478), (2, 10089239), (41, 492158), (53, 380726), (82, 246079), (106, 190363), (2173, 9286), (4346, 4643)]