21587025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16931}}^1$

素因数の和:16961

約数の個数: 24

約数和(自身を含む): 37792224

約数和(自身を除く): 16205199

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16931, 50793, 84655, 253965, 287827, 423275, 863481, 1269825, 1439135, 4317405, 7195675, 21587025]

約数ペア:

[(1, 21587025), (3, 7195675), (5, 4317405), (15, 1439135), (17, 1269825), (25, 863481), (51, 423275), (75, 287827), (85, 253965), (255, 84655), (425, 50793), (1275, 16931)]