138243721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 177020928

約数和(自身を除く): 38777207

約数列:

[1, 7, 11, 77, 83, 97, 223, 581, 679, 913, 1067, 1561, 2453, 6391, 7469, 8051, 17171, 18509, 21631, 56357, 88561, 129563, 151417, 203599, 237941, 619927, 1425193, 1665587, 1795373, 12567611, 19749103, 138243721]

約数ペア:

[(1, 138243721), (7, 19749103), (11, 12567611), (77, 1795373), (83, 1665587), (97, 1425193), (223, 619927), (581, 237941), (679, 203599), (913, 151417), (1067, 129563), (1561, 88561), (2453, 56357), (6391, 21631), (7469, 18509), (8051, 17171)]