19965075

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20477}}^1$

素因数の和:20503

約数の個数: 24

約数和(自身を含む): 35549808

約数和(自身を除く): 15584733

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 20477, 61431, 102385, 266201, 307155, 511925, 798603, 1331005, 1535775, 3993015, 6655025, 19965075]

約数ペア:

[(1, 19965075), (3, 6655025), (5, 3993015), (13, 1535775), (15, 1331005), (25, 798603), (39, 511925), (65, 307155), (75, 266201), (195, 102385), (325, 61431), (975, 20477)]