19927985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 30081024

約数和(自身を除く): 10153039

約数列:

[1, 5, 7, 11, 35, 55, 77, 191, 271, 385, 955, 1337, 1355, 1897, 2101, 2981, 6685, 9485, 10505, 14707, 14905, 20867, 51761, 73535, 104335, 258805, 362327, 569371, 1811635, 2846855, 3985597, 19927985]

約数ペア:

[(1, 19927985), (5, 3985597), (7, 2846855), (11, 1811635), (35, 569371), (55, 362327), (77, 258805), (191, 104335), (271, 73535), (385, 51761), (955, 20867), (1337, 14905), (1355, 14707), (1897, 10505), (2101, 9485), (2981, 6685)]