28249905

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{25799}}^1$

素因数の和:25880

約数の個数: 16

約数和(自身を含む): 45820800

約数和(自身を除く): 17570895

約数列:

[1, 3, 5, 15, 73, 219, 365, 1095, 25799, 77397, 128995, 386985, 1883327, 5649981, 9416635, 28249905]

約数ペア:

[(1, 28249905), (3, 9416635), (5, 5649981), (15, 1883327), (73, 386985), (219, 128995), (365, 77397), (1095, 25799)]