28399775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3517}}^1$

素因数の和:3563

約数の個数: 24

約数和(自身を含む): 39260880

約数和(自身を除く): 10861105

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 3517, 8075, 17585, 59789, 66823, 87925, 298945, 334115, 1135991, 1494725, 1670575, 5679955, 28399775]

約数ペア:

[(1, 28399775), (5, 5679955), (17, 1670575), (19, 1494725), (25, 1135991), (85, 334115), (95, 298945), (323, 87925), (425, 66823), (475, 59789), (1615, 17585), (3517, 8075)]