16189840

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1289}}^1$

素因数の和:1459

約数の個数: 40

約数和(自身を含む): 37910520

約数和(自身を除く): 21720680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1289, 1570, 2512, 2578, 3140, 5156, 6280, 6445, 10312, 12560, 12890, 20624, 25780, 51560, 103120, 202373, 404746, 809492, 1011865, 1618984, 2023730, 3237968, 4047460, 8094920, 16189840]

約数ペア:

[(1, 16189840), (2, 8094920), (4, 4047460), (5, 3237968), (8, 2023730), (10, 1618984), (16, 1011865), (20, 809492), (40, 404746), (80, 202373), (157, 103120), (314, 51560), (628, 25780), (785, 20624), (1256, 12890), (1289, 12560), (1570, 10312), (2512, 6445), (2578, 6280), (3140, 5156)]