21384555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4933}}^1$

素因数の和:4975

約数の個数: 24

約数和(自身を含む): 36353712

約数和(自身を除く): 14969157

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4933, 14799, 24665, 73995, 83861, 251583, 419305, 1257915, 1425637, 4276911, 7128185, 21384555]

約数ペア:

[(1, 21384555), (3, 7128185), (5, 4276911), (15, 1425637), (17, 1257915), (51, 419305), (85, 251583), (255, 83861), (289, 73995), (867, 24665), (1445, 14799), (4335, 4933)]