28216425

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{19801}}^1$

素因数の和:19833

約数の個数: 24

約数和(自身を含む): 49108960

約数和(自身を除く): 20892535

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 19801, 59403, 99005, 297015, 376219, 495025, 1128657, 1485075, 1881095, 5643285, 9405475, 28216425]

約数ペア:

[(1, 28216425), (3, 9405475), (5, 5643285), (15, 1881095), (19, 1485075), (25, 1128657), (57, 495025), (75, 376219), (95, 297015), (285, 99005), (475, 59403), (1425, 19801)]