28293225

素因数分解:

$3^1\times 5^2\times {\mathrm{311}}^1\times {\mathrm{1213}}^1$

素因数の和:1537

約数の個数: 24

約数和(自身を含む): 46967232

約数和(自身を除く): 18674007

約数列:

[1, 3, 5, 15, 25, 75, 311, 933, 1213, 1555, 3639, 4665, 6065, 7775, 18195, 23325, 30325, 90975, 377243, 1131729, 1886215, 5658645, 9431075, 28293225]

約数ペア:

[(1, 28293225), (3, 9431075), (5, 5658645), (15, 1886215), (25, 1131729), (75, 377243), (311, 90975), (933, 30325), (1213, 23325), (1555, 18195), (3639, 7775), (4665, 6065)]