19953857

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{593}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 7417663

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 593, 1463, 1771, 3059, 4151, 4807, 6523, 11267, 13639, 33649, 45661, 78869, 95473, 123937, 150029, 259141, 867559, 1050203, 1813987, 2850551, 19953857]

約数ペア:

[(1, 19953857), (7, 2850551), (11, 1813987), (19, 1050203), (23, 867559), (77, 259141), (133, 150029), (161, 123937), (209, 95473), (253, 78869), (437, 45661), (593, 33649), (1463, 13639), (1771, 11267), (3059, 6523), (4151, 4807)]