19101980

素因数分解:

$2^2\times 5^1\times {\mathrm{733}}^1\times {\mathrm{1303}}^1$

素因数の和:2045

約数の個数: 24

約数和(自身を含む): 40199712

約数和(自身を除く): 21097732

約数列:

[1, 2, 4, 5, 10, 20, 733, 1303, 1466, 2606, 2932, 3665, 5212, 6515, 7330, 13030, 14660, 26060, 955099, 1910198, 3820396, 4775495, 9550990, 19101980]

約数ペア:

[(1, 19101980), (2, 9550990), (4, 4775495), (5, 3820396), (10, 1910198), (20, 955099), (733, 26060), (1303, 14660), (1466, 13030), (2606, 7330), (2932, 6515), (3665, 5212)]