19886559

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 16608801

約数列:

[1, 3, 7, 11, 19, 21, 23, 33, 57, 69, 77, 133, 161, 197, 209, 231, 253, 399, 437, 483, 591, 627, 759, 1311, 1379, 1463, 1771, 2167, 3059, 3743, 4137, 4389, 4531, 4807, 5313, 6501, 9177, 11229, 13593, 14421, 15169, 26201, 31717, 33649, 41173, 45507, 49841, 78603, 86089, 95151, 100947, 123519, 149523, 258267, 288211, 348887, 602623, 864633, 946979, 1046661, 1807869, 2840937, 6628853, 19886559]

約数ペア:

[(1, 19886559), (3, 6628853), (7, 2840937), (11, 1807869), (19, 1046661), (21, 946979), (23, 864633), (33, 602623), (57, 348887), (69, 288211), (77, 258267), (133, 149523), (161, 123519), (197, 100947), (209, 95151), (231, 86089), (253, 78603), (399, 49841), (437, 45507), (483, 41173), (591, 33649), (627, 31717), (759, 26201), (1311, 15169), (1379, 14421), (1463, 13593), (1771, 11229), (2167, 9177), (3059, 6501), (3743, 5313), (4137, 4807), (4389, 4531)]