21173295

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9871}}^1$

素因数の和:9903

約数の個数: 32

約数和(自身を含む): 39803904

約数和(自身を除く): 18630609

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9871, 29613, 49355, 108581, 128323, 148065, 325743, 384969, 542905, 641615, 1411553, 1628715, 1924845, 4234659, 7057765, 21173295]

約数ペア:

[(1, 21173295), (3, 7057765), (5, 4234659), (11, 1924845), (13, 1628715), (15, 1411553), (33, 641615), (39, 542905), (55, 384969), (65, 325743), (143, 148065), (165, 128323), (195, 108581), (429, 49355), (715, 29613), (2145, 9871)]