19964325

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 34908480

約数和(自身を除く): 14944155

約数列:

[1, 3, 5, 15, 25, 29, 67, 75, 87, 137, 145, 201, 335, 411, 435, 685, 725, 1005, 1675, 1943, 2055, 2175, 3425, 3973, 5025, 5829, 9179, 9715, 10275, 11919, 19865, 27537, 29145, 45895, 48575, 59595, 99325, 137685, 145725, 229475, 266191, 297975, 688425, 798573, 1330955, 3992865, 6654775, 19964325]

約数ペア:

[(1, 19964325), (3, 6654775), (5, 3992865), (15, 1330955), (25, 798573), (29, 688425), (67, 297975), (75, 266191), (87, 229475), (137, 145725), (145, 137685), (201, 99325), (335, 59595), (411, 48575), (435, 45895), (685, 29145), (725, 27537), (1005, 19865), (1675, 11919), (1943, 10275), (2055, 9715), (2175, 9179), (3425, 5829), (3973, 5025)]