20340975

素因数分解:

$3^1\times 5^2\times {\mathrm{367}}^1\times {\mathrm{739}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 33767680

約数和(自身を除く): 13426705

約数列:

[1, 3, 5, 15, 25, 75, 367, 739, 1101, 1835, 2217, 3695, 5505, 9175, 11085, 18475, 27525, 55425, 271213, 813639, 1356065, 4068195, 6780325, 20340975]

約数ペア:

[(1, 20340975), (3, 6780325), (5, 4068195), (15, 1356065), (25, 813639), (75, 271213), (367, 55425), (739, 27525), (1101, 18475), (1835, 11085), (2217, 9175), (3695, 5505)]