19966875

素因数分解:

$3^1\times 5^4\times {\mathrm{23}}^1\times {\mathrm{463}}^1$

素因数の和:509

約数の個数: 40

約数和(自身を含む): 34788864

約数和(自身を除く): 14821989

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 125, 345, 375, 463, 575, 625, 1389, 1725, 1875, 2315, 2875, 6945, 8625, 10649, 11575, 14375, 31947, 34725, 43125, 53245, 57875, 159735, 173625, 266225, 289375, 798675, 868125, 1331125, 3993375, 6655625, 19966875]

約数ペア:

[(1, 19966875), (3, 6655625), (5, 3993375), (15, 1331125), (23, 868125), (25, 798675), (69, 289375), (75, 266225), (115, 173625), (125, 159735), (345, 57875), (375, 53245), (463, 43125), (575, 34725), (625, 31947), (1389, 14375), (1725, 11575), (1875, 10649), (2315, 8625), (2875, 6945)]