123390745

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 162321408

約数和(自身を除く): 38930663

約数列:

[1, 5, 23, 37, 47, 115, 185, 235, 617, 851, 1081, 1739, 3085, 4255, 5405, 8695, 14191, 22829, 28999, 39997, 70955, 114145, 144995, 199985, 525067, 666977, 1072963, 2625335, 3334885, 5364815, 24678149, 123390745]

約数ペア:

[(1, 123390745), (5, 24678149), (23, 5364815), (37, 3334885), (47, 2625335), (115, 1072963), (185, 666977), (235, 525067), (617, 199985), (851, 144995), (1081, 114145), (1739, 70955), (3085, 39997), (4255, 28999), (5405, 22829), (8695, 14191)]