21381810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{6661}}^1$

素因数の和:6778

約数の個数: 32

約数和(自身を含む): 51803712

約数和(自身を除く): 30421902

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 107, 214, 321, 535, 642, 1070, 1605, 3210, 6661, 13322, 19983, 33305, 39966, 66610, 99915, 199830, 712727, 1425454, 2138181, 3563635, 4276362, 7127270, 10690905, 21381810]

約数ペア:

[(1, 21381810), (2, 10690905), (3, 7127270), (5, 4276362), (6, 3563635), (10, 2138181), (15, 1425454), (30, 712727), (107, 199830), (214, 99915), (321, 66610), (535, 39966), (642, 33305), (1070, 19983), (1605, 13322), (3210, 6661)]