19816425

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3037}}^1$

素因数の和:3082

約数の個数: 36

約数和(自身を含む): 36729420

約数和(自身を除く): 16912995

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3037, 6525, 9111, 15185, 27333, 45555, 75925, 88073, 136665, 227775, 264219, 440365, 683325, 792657, 1321095, 2201825, 3963285, 6605475, 19816425]

約数ペア:

[(1, 19816425), (3, 6605475), (5, 3963285), (9, 2201825), (15, 1321095), (25, 792657), (29, 683325), (45, 440365), (75, 264219), (87, 227775), (145, 136665), (225, 88073), (261, 75925), (435, 45555), (725, 27333), (1305, 15185), (2175, 9111), (3037, 6525)]