21031275

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{4597}}^1$

素因数の和:4671

約数の個数: 24

約数和(自身を含む): 35349424

約数和(自身を除く): 14318149

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 4597, 13791, 22985, 68955, 114925, 280417, 344775, 841251, 1402085, 4206255, 7010425, 21031275]

約数ペア:

[(1, 21031275), (3, 7010425), (5, 4206255), (15, 1402085), (25, 841251), (61, 344775), (75, 280417), (183, 114925), (305, 68955), (915, 22985), (1525, 13791), (4575, 4597)]