19990652

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:530

約数の個数: 36

約数和(自身を含む): 38923248

約数和(自身を除く): 18932596

約数列:

[1, 2, 4, 11, 22, 44, 103, 121, 206, 242, 401, 412, 484, 802, 1133, 1604, 2266, 4411, 4532, 8822, 12463, 17644, 24926, 41303, 48521, 49852, 82606, 97042, 165212, 194084, 454333, 908666, 1817332, 4997663, 9995326, 19990652]

約数ペア:

[(1, 19990652), (2, 9995326), (4, 4997663), (11, 1817332), (22, 908666), (44, 454333), (103, 194084), (121, 165212), (206, 97042), (242, 82606), (401, 49852), (412, 48521), (484, 41303), (802, 24926), (1133, 17644), (1604, 12463), (2266, 8822), (4411, 4532)]