18618375

素因数分解:

$3^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:528

約数の個数: 32

約数和(自身を含む): 31299840

約数和(自身を除く): 12681465

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 379, 393, 655, 1137, 1895, 1965, 3275, 5685, 9475, 9825, 16375, 28425, 47375, 49125, 49649, 142125, 148947, 248245, 744735, 1241225, 3723675, 6206125, 18618375]

約数ペア:

[(1, 18618375), (3, 6206125), (5, 3723675), (15, 1241225), (25, 744735), (75, 248245), (125, 148947), (131, 142125), (375, 49649), (379, 49125), (393, 47375), (655, 28425), (1137, 16375), (1895, 9825), (1965, 9475), (3275, 5685)]