28428375

素因数分解:

$3^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 49611744

約数和(自身を除く): 21183369

約数列:

[1, 3, 5, 15, 25, 41, 43, 75, 123, 125, 129, 205, 215, 375, 615, 645, 1025, 1075, 1763, 1849, 3075, 3225, 5125, 5289, 5375, 5547, 8815, 9245, 15375, 16125, 26445, 27735, 44075, 46225, 75809, 132225, 138675, 220375, 227427, 231125, 379045, 661125, 693375, 1137135, 1895225, 5685675, 9476125, 28428375]

約数ペア:

[(1, 28428375), (3, 9476125), (5, 5685675), (15, 1895225), (25, 1137135), (41, 693375), (43, 661125), (75, 379045), (123, 231125), (125, 227427), (129, 220375), (205, 138675), (215, 132225), (375, 75809), (615, 46225), (645, 44075), (1025, 27735), (1075, 26445), (1763, 16125), (1849, 15375), (3075, 9245), (3225, 8815), (5125, 5547), (5289, 5375)]